Shang, Desheng; Zhang, Yaoming Limit cycle bifurcations of a symmetric quintic system. (Chinese. English summary) Zbl 1399.34097 Chin. Ann. Math., Ser. A 38, No. 3, 339-364 (2017). MSC: 34C07 34C05 34C23 34E10 34C14 PDFBibTeX XMLCite \textit{D. Shang} and \textit{Y. Zhang}, Chin. Ann. Math., Ser. A 38, No. 3, 339--364 (2017; Zbl 1399.34097) Full Text: DOI
Sang, Bo Integrability conditions for a class of complex cubic Lotka-Volterra systems with a 1:-4 resonant singular point. (Chinese. English summary) Zbl 1340.34003 Chin. Ann. Math., Ser. A 35, No. 6, 729-740 (2014). MSC: 34A05 34C05 PDFBibTeX XMLCite \textit{B. Sang}, Chin. Ann. Math., Ser. A 35, No. 6, 729--740 (2014; Zbl 1340.34003)
Sang, Bo Center determination problems for a class of cubic systems. (Chinese. English summary) Zbl 1313.34105 Chin. Ann. Math., Ser. A 35, No. 3, 361-372 (2014). MSC: 34C05 34C45 PDFBibTeX XMLCite \textit{B. Sang}, Chin. Ann. Math., Ser. A 35, No. 3, 361--372 (2014; Zbl 1313.34105)
Sang, Bo The nondegenerate center problem for a family of sixth-order differential systems. (Chinese. English summary) Zbl 1313.34104 Chin. Ann. Math., Ser. A 34, No. 6, 709-716 (2013). MSC: 34C05 34C14 34A25 PDFBibTeX XMLCite \textit{B. Sang}, Chin. Ann. Math., Ser. A 34, No. 6, 709--716 (2013; Zbl 1313.34104)
Deng, Guifeng; Liu, Fuyao; Lu, Qiuying; Zhang, Weipeng Heteroclinic cycle bifurcations in a 3-dimensional reversible system. (Chinese. English summary) Zbl 1299.34144 Chin. Ann. Math., Ser. A 34, No. 4, 401-414 (2013). MSC: 34C23 34C37 34C28 34C14 34C05 PDFBibTeX XMLCite \textit{G. Deng} et al., Chin. Ann. Math., Ser. A 34, No. 4, 401--414 (2013; Zbl 1299.34144)
Li, Hongwei; Li, Feng; Jin, Yinlai Bifurcation of limit cycles in a septic system with 13 parameters. (Chinese. English summary) Zbl 1274.34092 Chin. Ann. Math., Ser. A 33, No. 4, 415-424 (2012). MSC: 34C05 34C07 34C23 34C25 PDFBibTeX XMLCite \textit{H. Li} et al., Chin. Ann. Math., Ser. A 33, No. 4, 415--424 (2012; Zbl 1274.34092)
Sang, Bo; Liu, Wenjian; Zhu, Siming Algebraic conditions for a class of cubic time-reversible differential systems. (Chinese. English summary) Zbl 1240.34190 Chin. Ann. Math., Ser. A 32, No. 3, 283-288 (2011). MSC: 34C14 34C05 PDFBibTeX XMLCite \textit{B. Sang} et al., Chin. Ann. Math., Ser. A 32, No. 3, 283--288 (2011; Zbl 1240.34190)
Geng, Fengjie; Zhu, Deming; Lian, Hairong Bifurcations of heterodimensional cycles in \(\mathbb{R}^4\). (Chinese. English translation) Zbl 1240.34228 Chin. Ann. Math., Ser. A 32, No. 2, 129-140 (2011); translation in Chin. J. Contemp. Math. 32, No. 2, 103-114 (2011). MSC: 34C37 34C23 34C05 34C25 37C29 37G15 PDFBibTeX XMLCite \textit{F. Geng} et al., Chin. Ann. Math., Ser. A 32, No. 2, 129--140 (2011; Zbl 1240.34228); translation in Chin. J. Contemp. Math. 32, No. 2, 103--114 (2011)
Wang, Xinzhen; Jing, Haibin; Qi, Jiangang Limit-circle and nonlimit-circle criteria for singular discrete Hamiltonian systems. (Chinese. English summary) Zbl 1240.39017 Chin. Ann. Math., Ser. A 31, No. 6, 725-736 (2010). MSC: 39A12 37J05 34C07 34B20 PDFBibTeX XMLCite \textit{X. Wang} et al., Chin. Ann. Math., Ser. A 31, No. 6, 725--736 (2010; Zbl 1240.39017)
Yang, Cuihong; Liang, Zhaojun; Zhang, Xinan Five limit cycles for a class of quadratic systems in \(\mathbb R^3\). (Chinese. English summary) Zbl 1240.34169 Chin. Ann. Math., Ser. A 31, No. 4, 497-506 (2010). MSC: 34C05 34C45 PDFBibTeX XMLCite \textit{C. Yang} et al., Chin. Ann. Math., Ser. A 31, No. 4, 497--506 (2010; Zbl 1240.34169)
Yang, Junmin; Han, Mao’an Hopf bifurcation for cubic perturbations of quadratic integrable non-Hamiltonian systems. (Chinese. English summary) Zbl 1240.34170 Chin. Ann. Math., Ser. A 31, No. 3, 305-320 (2010). MSC: 34C05 34C23 34C07 PDFBibTeX XMLCite \textit{J. Yang} and \textit{M. Han}, Chin. Ann. Math., Ser. A 31, No. 3, 305--320 (2010; Zbl 1240.34170)
Huang, Xuan; Wang, Liying; Jin, Yinlai Stability of homoclinic loops to saddle-focus in arbitrarily finite dimensional spaces. (Chinese. English summary) Zbl 1212.34129 Chin. Ann. Math., Ser. A 30, No. 4, 563-574 (2009). MSC: 34C37 34C05 34C07 34D20 PDFBibTeX XMLCite \textit{X. Huang} et al., Chin. Ann. Math., Ser. A 30, No. 4, 563--574 (2009; Zbl 1212.34129)
Sun, Ying; Zhu, Deming Dynamical behavior and bifurcation problems near reversible homoclinic loop connecting first-order fine saddle-focus. (Chinese. English summary) Zbl 1174.34040 Chin. Ann. Math., Ser. A 29, No. 3, 425-434 (2008). MSC: 34C37 34C05 34C14 34C23 PDFBibTeX XMLCite \textit{Y. Sun} and \textit{D. Zhu}, Chin. Ann. Math., Ser. A 29, No. 3, 425--434 (2008; Zbl 1174.34040)
Yue, Xishun; Sun, Wei; Zeng, Xianwu On the Bogdanov-Takens system under a class of cubic perturbations. (Chinese. English summary) Zbl 1174.34036 Chin. Ann. Math., Ser. A 29, No. 2, 261-272 (2008). MSC: 34C23 37G15 34E10 34C05 PDFBibTeX XMLCite \textit{X. Yue} et al., Chin. Ann. Math., Ser. A 29, No. 2, 261--272 (2008; Zbl 1174.34036)
Han, Maoan; Wang, Zheng; Zang, Hong Limit cycles by Hopf and homoclinic bifurcations for near-Hamiltonian systems. (Chinese. English summary) Zbl 1150.34014 Chin. Ann. Math., Ser. A 28, No. 5, 679-690 (2007). MSC: 34C23 34C05 34C07 37G15 34C37 PDFBibTeX XMLCite \textit{M. Han} et al., Chin. Ann. Math., Ser. A 28, No. 5, 679--690 (2007; Zbl 1150.34014)
Sang, Bo; Zhu, Siming The relationship between focal quantities and saddle quantities. (Chinese. English summary) Zbl 1140.34349 Chin. Ann. Math., Ser. A 28, No. 2, 267-272 (2007). Reviewer: Jihong Dou (Xian) MSC: 34C05 PDFBibTeX XMLCite \textit{B. Sang} and \textit{S. Zhu}, Chin. Ann. Math., Ser. A 28, No. 2, 267--272 (2007; Zbl 1140.34349)
Han, Maoan; Fan, Chunyan On the number and distributions of limit cycles in a quartic system. (Chinese. English summary) Zbl 1106.34016 Chin. Ann. Math., Ser. A 26, No. 6, 825-834 (2005). MSC: 34C05 34C37 34C23 PDFBibTeX XMLCite \textit{M. Han} and \textit{C. Fan}, Chin. Ann. Math., Ser. A 26, No. 6, 825--834 (2005; Zbl 1106.34016)
Chen, Haibo; Liu, Yirong Limit cycles of the equator in a quintic polynomial system. (Chinese. English summary) Zbl 1048.34063 Chin. Ann. Math., Ser. A 24, No. 2, 219-224 (2003). MSC: 34C05 34C23 PDFBibTeX XMLCite \textit{H. Chen} and \textit{Y. Liu}, Chin. Ann. Math., Ser. A 24, No. 2, 219--224 (2003; Zbl 1048.34063)
Liu, Xingbo; Han, Maoan The bifurcation for a type of heteroclinic cycles with two vertices. (Chinese) Zbl 0971.34026 Chin. Ann. Math., Ser. A 21, No. 6, 667-674 (2000). MSC: 34C23 34C37 37G15 PDFBibTeX XMLCite \textit{X. Liu} and \textit{M. Han}, Chin. Ann. Math., Ser. A 21, No. 6, 667--674 (2000; Zbl 0971.34026)
Zhang, Xinan; Zhao, Yuling; Maeng, Xiaoming The global geometric properties of a class of homogeneous vector fields of degree two in \(R^3\). (Chinese) Zbl 0949.34022 Chin. Ann. Math., Ser. A 20, No. 4, 519-526 (1999). Reviewer: Han Maoan (Shanghai) MSC: 34C07 37E35 34C37 PDFBibTeX XMLCite \textit{X. Zhang} et al., Chin. Ann. Math., Ser. A 20, No. 4, 519--526 (1999; Zbl 0949.34022)
Zhao, Liqin Cyclicity of several 3-degenerate planar polycycles. (Chinese) Zbl 0949.34021 Chin. Ann. Math., Ser. A 20, No. 4, 489-498 (1999). Reviewer: Han Maoan (Shanghai) MSC: 34C05 37G15 34C20 PDFBibTeX XMLCite \textit{L. Zhao}, Chin. Ann. Math., Ser. A 20, No. 4, 489--498 (1999; Zbl 0949.34021)
Yu, Shuxiang On the compactness of the set of bounded orbits. (Chinese) Zbl 0947.34011 Chin. Ann. Math., Ser. A 19, No. 6, 703-706 (1998). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 PDFBibTeX XMLCite \textit{S. Yu}, Chin. Ann. Math., Ser. A 19, No. 6, 703--706 (1998; Zbl 0947.34011)
Zhou, Yurong Conditions of monotonicity of divergence integral. (Chinese) Zbl 0934.34022 Chin. Ann. Math., Ser. A 19, No. 3, 353-360 (1998). Reviewer: Ye Yanqian (Nanjing) MSC: 34C07 34C05 PDFBibTeX XMLCite \textit{Y. Zhou}, Chin. Ann. Math., Ser. A 19, No. 3, 353--360 (1998; Zbl 0934.34022)
Zhang, Xiang Limit cycles and bifurcation phenomena for the quadratic differential system \((\text{III})_{n=0}\). (Chinese) Zbl 0933.34023 Chin. Ann. Math., Ser. A 19, No. 2, 211-220 (1998). Reviewer: Bin Liu (Beijing) MSC: 34C05 34C23 34C07 PDFBibTeX XMLCite \textit{X. Zhang}, Chin. Ann. Math., Ser. A 19, No. 2, 211--220 (1998; Zbl 0933.34023)
Liu, Bin Conditions for nonexistence of limit cycles of a class of generalized Liénard equations. (Chinese) Zbl 0933.34022 Chin. Ann. Math., Ser. A 19, No. 2, 177-180 (1998). Reviewer: Bin Liu (Beijing) MSC: 34C05 PDFBibTeX XMLCite \textit{B. Liu}, Chin. Ann. Math., Ser. A 19, No. 2, 177--180 (1998; Zbl 0933.34022)
Zhang, Jianfeng Limit cycles for a class of Abel equations with coefficients changing sign. (Chinese) Zbl 0883.34037 Chin. Ann. Math., Ser. A 18, No. 3, 271-278 (1997). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 PDFBibTeX XMLCite \textit{J. Zhang}, Chin. Ann. Math., Ser. A 18, No. 3, 271--278 (1997; Zbl 0883.34037)
Zhang, Xiang Bifurcation problem of a special quadratic differential system. (Chinese) Zbl 0879.34042 Chin. Ann. Math., Ser. A 18, No. 2, 213-222 (1997). MSC: 34C23 34C05 PDFBibTeX XMLCite \textit{X. Zhang}, Chin. Ann. Math., Ser. A 18, No. 2, 213--222 (1997; Zbl 0879.34042)
Zhou, Rongxing; Yu, Shuxiang Qualitative analysis of a kind of toral differential equations. (Chinese) Zbl 0922.34025 Chin. Ann. Math., Ser. A 17, No. 4, 507-514 (1996). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 PDFBibTeX XMLCite \textit{R. Zhou} and \textit{S. Yu}, Chin. Ann. Math., Ser. A 17, No. 4, 507--514 (1996; Zbl 0922.34025)
Zhang, Jianfeng Periodic solutions for the Abel equations corresponding to quadratic systems. (Chinese) Zbl 0876.34052 Chin. Ann. Math., Ser. A 17, No. 6, 693-702 (1996). MSC: 34C25 34C05 PDFBibTeX XMLCite \textit{J. Zhang}, Chin. Ann. Math., Ser. A 17, No. 6, 693--702 (1996; Zbl 0876.34052)
Han, Maoan; Li, Liangying The uniqueness of limit cycles bifurcating from a homoclinic or heteroclinic loop. (Chinese) Zbl 0839.34034 Chin. Ann. Math., Ser. A 16, No. 5, 645-651 (1995). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 34C37 PDFBibTeX XMLCite \textit{M. Han} and \textit{L. Li}, Chin. Ann. Math., Ser. A 16, No. 5, 645--651 (1995; Zbl 0839.34034)
Ma, Zhien; Liu, Weiguo On the existence and uniqueness of limit cycle for a type of plane differential system. (Chinese) Zbl 0808.34034 Chin. Ann. Math., Ser. A 15, No. 2, 155-163 (1994). Reviewer: Huang Qiyu (Fujian) MSC: 34C05 PDFBibTeX XMLCite \textit{Z. Ma} and \textit{W. Liu}, Chin. Ann. Math., Ser. A 15, No. 2, 155--163 (1994; Zbl 0808.34034)
Shan, Baiqian On the existence of the limit cycles of the system \((E_ 3^ 2)\) with an ellipse solution. (Chinese) Zbl 0791.34028 Chin. Ann. Math., Ser. A 14, No. 6, 698-706 (1993). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 PDFBibTeX XMLCite \textit{B. Shan}, Chin. Ann. Math., Ser. A 14, No. 6, 698--706 (1993; Zbl 0791.34028)
Ma, Yanan A new method of local analysis for bifurcation problems. (Chinese) Zbl 0803.34024 Chin. Ann. Math., Ser. A 14, No. 4, 464-471 (1993). Reviewer: Z.Jing (Beijing) MSC: 34C23 34C05 PDFBibTeX XMLCite \textit{Y. Ma}, Chin. Ann. Math., Ser. A 14, No. 4, 464--471 (1993; Zbl 0803.34024)
Zhou, Yurong; Deng, Jinyi Applications of Dulac functions in studying the number of limit cycles. (Chinese) Zbl 0772.34029 Chin. Ann. Math., Ser. A 13, No. 6, 692-698 (1992). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 PDFBibTeX XMLCite \textit{Y. Zhou} and \textit{J. Deng}, Chin. Ann. Math., Ser. A 13, No. 6, 692--698 (1992; Zbl 0772.34029)
Liu, Yirong Focal values and some kinds of bifurcation of limit cycles for plane \(n\)th order autonomous differential system. (Chinese) Zbl 0771.34023 Chin. Ann. Math., Ser. A 13, No. 5, 589-597 (1992). Reviewer: R.Lee (Fredericton) MSC: 34C05 34C23 PDFBibTeX XMLCite \textit{Y. Liu}, Chin. Ann. Math., Ser. A 13, No. 5, 589--597 (1992; Zbl 0771.34023)
Shen, Boqian The problem on the existence of cubic curve limit cycle and cubic curve separatrix cycle in quadratic system. (Chinese) Zbl 0754.34022 Chin. Ann. Math., Ser. A 12, No. 3, 382-389 (1991). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 PDFBibTeX XMLCite \textit{B. Shen}, Chin. Ann. Math., Ser. A 12, No. 3, 382--389 (1991; Zbl 0754.34022)
Han, Maoan Limit cycles of differential equations with three singular points. (Chinese) Zbl 0754.34018 Chin. Ann. Math., Ser. A 12, No. 3, 349-355 (1991). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 PDFBibTeX XMLCite \textit{M. Han}, Chin. Ann. Math., Ser. A 12, No. 3, 349--355 (1991; Zbl 0754.34018)
Sun, Jianhua Bifurcation to separatrix loops in supercritical cases. (Chinese) Zbl 0756.34045 Chin. Ann. Math., Ser. A 12, No. 5, 636-643 (1991). Reviewer: Z.Jing (Beijing) MSC: 34C23 34C05 PDFBibTeX XMLCite \textit{J. Sun}, Chin. Ann. Math., Ser. A 12, No. 5, 636--643 (1991; Zbl 0756.34045)
Suo, Guangjian The maximal number and relative places of the limit cycles for system \(\dot x =y, \dot y =x(1-x^ 2)+(\alpha{}-x^ 2)y\). (Chinese) Zbl 0754.34023 Chin. Ann. Math., Ser. A 12, No. 4, 430-438 (1991). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 PDFBibTeX XMLCite \textit{G. Suo}, Chin. Ann. Math., Ser. A 12, No. 4, 430--438 (1991; Zbl 0754.34023)
Liu, Deming The necessary and sufficient conditions of existence and uniqueness of limit cycle for a system of polynomials. (Chinese) Zbl 0731.34026 Chin. Ann. Math., Ser. A 12, No. 1, 1-7 (1991). Reviewer: Ding Tongren (Beijing) MSC: 34C05 PDFBibTeX XMLCite \textit{D. Liu}, Chin. Ann. Math., Ser. A 12, No. 1, 1--7 (1991; Zbl 0731.34026)
Liu, Yirong; Li, Jibin On singularity values of the complex autonomous differential systems. (Chinese) Zbl 0731.34005 Chin. Ann. Math., Ser. A 11, No. 6, 717-724 (1990). Reviewer: Jiang Furu (Shanghai) MSC: 34M35 34C05 PDFBibTeX XMLCite \textit{Y. Liu} and \textit{J. Li}, Chin. Ann. Math., Ser. A 11, No. 6, 717--724 (1990; Zbl 0731.34005)
He, Chiming The uniqueness of limit cycles of nonlinear systems by an auxiliary function. (Chinese) Zbl 0719.34049 Chin. Ann. Math., Ser. A 11, No. 4, 507-518 (1990). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 34A34 PDFBibTeX XMLCite \textit{C. He}, Chin. Ann. Math., Ser. A 11, No. 4, 507--518 (1990; Zbl 0719.34049)
Chang, Pingguang The stability of separatrix cycle \(S^{(2)}\) with two singularities for quadratic systems. (Chinese) Zbl 0719.34046 Chin. Ann. Math., Ser. A 11, No. 3, 361-365 (1990). Reviewer: Ye Yanqian (Nanjing) MSC: 34C05 34D05 PDFBibTeX XMLCite \textit{P. Chang}, Chin. Ann. Math., Ser. A 11, No. 3, 361--365 (1990; Zbl 0719.34046)
Luo, Dingjun; Zhu, Deming The stability of homoclinic loop and the uniqueness for generating limit cycles. (Chinese) Zbl 0705.34024 Chin. Ann. Math., Ser. A 11, No. 1, 95-103 (1990). Reviewer: Zhujun Jing MSC: 34C05 34D20 37G99 34C37 PDFBibTeX XMLCite \textit{D. Luo} and \textit{D. Zhu}, Chin. Ann. Math., Ser. A 11, No. 1, 95--103 (1990; Zbl 0705.34024)
Zhou, Yurong Trajectories joining critical points. (Chinese) Zbl 0701.34038 Chin. Ann. Math., Ser. A 10, No. 4, 502-508 (1989). Reviewer: F.Ling MSC: 34C05 34A30 37-XX PDFBibTeX XMLCite \textit{Y. Zhou}, Chin. Ann. Math., Ser. A 10, No. 4, 502--508 (1989; Zbl 0701.34038)
Liu, Nangen The limit cycles of a system of a two species predator-prey model with Holling’s type I functional response. (Chinese) Zbl 0696.92019 Chin. Ann. Math., Ser. A 9, No. 4, 421-427 (1988). MSC: 92D25 34C05 PDFBibTeX XMLCite \textit{N. Liu}, Chin. Ann. Math., Ser. A 9, No. 4, 421--427 (1988; Zbl 0696.92019)
Zhu, Deming Existence of the limit cycle and global behavior of the solutions of Liénard equation. (Chinese. English summary) Zbl 0632.34025 Chin. Ann. Math., Ser. A 7, 536-546 (1986). MSC: 34C05 PDFBibTeX XMLCite \textit{D. Zhu}, Chin. Ann. Math., Ser. A 7, 536--546 (1986; Zbl 0632.34025)
He, Qiming Existence and uniqueness of a limit cycle for the equation \(\dot x=\phi(y)-F(x)\), \(\dot y=-g(x)\). (Chinese. English summary) Zbl 0615.34024 Chin. Ann. Math., Ser. A 7, 222-237 (1986). Reviewer: Ye Yanqian MSC: 34C05 PDFBibTeX XMLCite \textit{Q. He}, Chin. Ann. Math., Ser. A 7, 222--237 (1986; Zbl 0615.34024)
Chen, Weifeng A quadratic system with second-order weak focus. (Chinese. English summary) Zbl 0593.34035 Chin. Ann. Math., Ser. A 7, 201-211 (1986). MSC: 34C05 PDFBibTeX XMLCite \textit{W. Chen}, Chin. Ann. Math., Ser. A 7, 201--211 (1986; Zbl 0593.34035)
Ma, Zhien On the existence and uniqueness of a limit cycle for a class of cubic systems. (Chinese. English summary) Zbl 0592.34020 Chin. Ann. Math., Ser. A 7, 1-6 (1986). MSC: 34C05 PDFBibTeX XMLCite \textit{Z. Ma}, Chin. Ann. Math., Ser. A 7, 1--6 (1986; Zbl 0592.34020)
Gei, Weigao A note on the paper ”The existence of limit cycles of a class of Liénard equations”. (Chinese. English summary) Zbl 0616.34030 Chin. Ann. Math., Ser. A 6, 751-752 (1985). Reviewer: Ye Yanqian MSC: 34C05 PDFBibTeX XMLCite \textit{W. Gei}, Chin. Ann. Math., Ser. A 6, 751--752 (1985; Zbl 0616.34030)
Han, Maoan On the uniqueness of limit cycles of quadratic system of type \((III)_{n=0}\) around a focus of order 2. (Chinese. English summary) Zbl 0593.34034 Chin. Ann. Math., Ser. A 6, 661-668 (1985). MSC: 34C05 PDFBibTeX XMLCite \textit{M. Han}, Chin. Ann. Math., Ser. A 6, 661--668 (1985; Zbl 0593.34034)
Suo, Guangjian The complex differential system with real coefficients \(\dot y=-x\), \(\dot x=y-(ax+\beta x^{2n+1})\) \((\alpha \beta \neq 0)\), possesses at least n limit cycles. (Chinese. English summary) Zbl 0593.34033 Chin. Ann. Math., Ser. A 6, 533-538 (1985). MSC: 34C05 PDFBibTeX XMLCite \textit{G. Suo}, Chin. Ann. Math., Ser. A 6, 533--538 (1985; Zbl 0593.34033)
Cai, Suilin; Wang, Zhongwei A quadratic system with second order weak focus. (Chinese. English summary) Zbl 0556.34023 Chin. Ann. Math., Ser. A 5, 765-770 (1984). Reviewer: J.H.Tian MSC: 34C05 PDFBibTeX XMLCite \textit{S. Cai} and \textit{Z. Wang}, Chin. Ann. Math., Ser. A 5, 765--770 (1984; Zbl 0556.34023)
Zhang, Zhifen On the existence of exact n limit cycles for the differential equations of Lienard’s type. (Chinese. English summary) Zbl 0544.34022 Chin. Ann. Math., Ser. A 5, 467-472 (1984). MSC: 34C05 PDFBibTeX XMLCite \textit{Z. Zhang}, Chin. Ann. Math., Ser. A 5, 467--472 (1984; Zbl 0544.34022)
Chen, Yiyuan Qualitative theory of differential equations on the projective plane. II. (Chinese. English summary) Zbl 0554.58044 Chin. Ann. Math., Ser. A 4, 755-762 (1983). MSC: 37G15 37C75 34C05 34C25 PDFBibTeX XMLCite \textit{Y. Chen}, Chin. Ann. Math., Ser. A 4, 755--762 (1983; Zbl 0554.58044)
Wang, Xian The existence of limit cycles for a class of Liénard equations. (Chinese. English summary) Zbl 0549.34034 Chin. Ann. Math., Ser. A 4, 723-730 (1983). MSC: 34C05 PDFBibTeX XMLCite \textit{X. Wang}, Chin. Ann. Math., Ser. A 4, 723--730 (1983; Zbl 0549.34034)
Ma, Zhien; Wang, Ernian The stability of a saddle loop and the condition to produce a limit cycle. (Chinese) Zbl 0535.34037 Chin. Ann. Math., Ser. A 4, 105-110 (1983). Reviewer: F.Ling MSC: 34D20 34C05 PDFBibTeX XMLCite \textit{Z. Ma} and \textit{E. Wang}, Chin. Ann. Math., Ser. A 4, 105--110 (1983; Zbl 0535.34037)
Ye, Yanqian; Wang, Mingshu An important property of the weak focus of a quadratic differential system. (Chinese) Zbl 0515.34021 Chin. Ann. Math., Ser. A 4, 65-69 (1983). MSC: 34C05 PDFBibTeX XMLCite \textit{Y. Ye} and \textit{M. Wang}, Chin. Ann. Math., Ser. A 4, 65--69 (1983; Zbl 0515.34021)