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Zvyagintseva, T. E.
On the Aizerman problem: coefficient conditions for the existence of three- and six-period cycles in a second-order discrete-time system. (English. Russian original) Zbl 07311033
Vestn. St. Petersbg. Univ., Math. 53, No. 2, 206-213 (2020); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 7(65), No. 2, 309-318 (2020).
MSC:  01A 93 34 93D
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\textit{T. E. Zvyagintseva}, Vestn. St. Petersbg. Univ., Math. 53, No. 2, 206--213 (2020; Zbl 07311033); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 7(65), No. 2, 309--318 (2020)
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Zvyagintseva, T. E.
On the Aizerman problem: coefficient conditions for the existence of a four-period cycle in a second-order discrete-time system. (English. Russian original) Zbl 07310917
Vestn. St. Petersbg. Univ., Math. 53, No. 1, 37-44 (2020); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 7(65), No. 1, 50-59 (2020).
MSC:  39A30 37C75 93C10 93C55
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\textit{T. E. Zvyagintseva}, Vestn. St. Petersbg. Univ., Math. 53, No. 1, 37--44 (2020; Zbl 07310917); translation from Vestn. St-Peterbg. Univ., Ser. I, Mat. Mekh. Astron. 7(65), No. 1, 50--59 (2020)
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Davydova, M. A.; Nechaeva, A. L.
Asymptotically stable periodic solutions in one problem of atmospheric diffusion of impurities: asymptotics, existence, and uniqueness. (English. Russian original) Zbl 1450.35029
Comput. Math. Math. Phys. 60, No. 3, 448-458 (2020); translation from Zh. Vychisl. Mat. Mat. Fiz. 60, No. 3, 451-461 (2020).
MSC:  35B25 35K20 35K58 35B10
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\textit{M. A. Davydova} and \textit{A. L. Nechaeva}, Comput. Math. Math. Phys. 60, No. 3, 448--458 (2020; Zbl 1450.35029); translation from Zh. Vychisl. Mat. Mat. Fiz. 60, No. 3, 451--461 (2020)
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Zhikov, V. V.; Pastukhova, S. E.
Large-time asymptotics of fundamental solutions for diffusion equations in periodic media and its application to averaging-theory estimates. (English. Russian original) Zbl 1448.35028
J. Math. Sci., New York 250, No. 4, 569-592 (2020); translation from Sovrem. Mat., Fundam. Napravl. 63, No. 2, 223-246 (2017).
MSC:  35B27 35K15 35K08 47D06 35A08
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\textit{V. V. Zhikov} and \textit{S. E. Pastukhova}, J. Math. Sci., New York 250, No. 4, 569--592 (2020; Zbl 1448.35028); translation from Sovrem. Mat., Fundam. Napravl. 63, No. 2, 223--246 (2017)
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Terekhin, M. T.
Nonzero periodic solutions of a special system of nonlinear differential equations. (English. Russian original) Zbl 1452.34047
J. Math. Sci., New York 248, No. 4, 467-475 (2020); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 148, 93-100 (2018).
MSC:  34C25 37C60 47N20
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\textit{M. T. Terekhin}, J. Math. Sci., New York 248, No. 4, 467--475 (2020; Zbl 1452.34047); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 148, 93--100 (2018)
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Abramov, V. V.
On stability of small periodic solutions. (English. Russian original) Zbl 07253553
J. Math. Sci., New York 248, No. 4, 375-381 (2020); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 148, 3-9 (2018).
Reviewer: Babatunde Ogundare (Ile-Ife)
MSC:  34C25 34C23 34D20 37C60
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\textit{V. V. Abramov}, J. Math. Sci., New York 248, No. 4, 375--381 (2020; Zbl 07253553); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 148, 3--9 (2018)
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