Chen, Shunqing Positive periodic solutions for the differential equations of 2-order \(p\)-Laplacian operator. (English) Zbl 1199.34195 J. Sichuan Norm. Univ., Nat. Sci. 31, No. 2, 155-158 (2008). MSC: 34C25 34B15 47N20 PDFBibTeX XMLCite \textit{S. Chen}, J. Sichuan Norm. Univ., Nat. Sci. 31, No. 2, 155--158 (2008; Zbl 1199.34195)
Chen, Shunqing Existence and multiplicity of positive solutions for a class of second-order operator systems. (Chinese. English summary) Zbl 1093.34513 J. Sichuan Norm. Univ., Nat. Sci. 28, No. 5, 538-541 (2005). MSC: 34B15 PDFBibTeX XMLCite \textit{S. Chen}, J. Sichuan Norm. Univ., Nat. Sci. 28, No. 5, 538--541 (2005; Zbl 1093.34513)
Chen, Shunqing Positive solutions for a class of third-order three-point nonlinear boundary value problems. (Chinese. English summary) Zbl 1094.34511 J. Sichuan Norm. Univ., Nat. Sci. 27, No. 4, 360-363 (2004). MSC: 34B18 35B15 34B10 47H11 PDFBibTeX XMLCite \textit{S. Chen}, J. Sichuan Norm. Univ., Nat. Sci. 27, No. 4, 360--363 (2004; Zbl 1094.34511)
Chen, Shunqing The existence of positive solutions for a class singular initial value problems. (Chinese. English summary) Zbl 1081.34502 J. Sichuan Norm. Univ., Nat. Sci. 27, No. 2, 165-168 (2004). MSC: 34A12 PDFBibTeX XMLCite \textit{S. Chen}, J. Sichuan Norm. Univ., Nat. Sci. 27, No. 2, 165--168 (2004; Zbl 1081.34502)