Zhang, Xiang; Ye, Qin Boundary value problems for singularly perturbed vector elliptic integrodifferential equations. (Chinese) Zbl 0900.35035 Acta Math. Sci. (Chin. Ed.) 15, No. 3, 269-274 (1995). MSC: 35B25 35J25 45K05 PDFBibTeX XMLCite \textit{X. Zhang} and \textit{Q. Ye}, Acta Math. Sci. (Chin. Ed.) 15, No. 3, 269--274 (1995; Zbl 0900.35035)
Zhang, Xiang; Ye, Qin Singular perturbations of nonlinear boundary value problems for impulsive differential equations. (Chinese) Zbl 0900.34072 Acta Math. Sci. (Chin. Ed.) 14, No. 4, 419-423 (1994). MSC: 34E15 34A37 34B15 34E05 PDFBibTeX XMLCite \textit{X. Zhang} and \textit{Q. Ye}, Acta Math. Sci. (Chin. Ed.) 14, No. 4, 419--423 (1994; Zbl 0900.34072)