Zhang, Binggen On the positive solutions of a kind of neutral equations. (Chinese. English summary) Zbl 0859.34059 Acta Math. Appl. Sin. 19, No. 2, 222-230 (1996). MSC: 34K99 34K40 34C10 PDFBibTeX XMLCite \textit{B. Zhang}, Acta Math. Appl. Sin. 19, No. 2, 222--230 (1996; Zbl 0859.34059)
Zhang, Binggen The forced oscillation of first order differential equations with deviating arguments. (Chinese. English summary) Zbl 0755.34069 Acta Math. Appl. Sin. 15, No. 1, 105-111 (1992). MSC: 34K99 34C25 34K20 PDFBibTeX XMLCite \textit{B. Zhang}, Acta Math. Appl. Sin. 15, No. 1, 105--111 (1992; Zbl 0755.34069)
Zhang, Bing-gen Stability of the ecology system of food chain with more than one pace. (Chinese) Zbl 0513.34060 Acta Math. Appl. Sin. 6, 236-239 (1983). MSC: 34D20 92B05 PDFBibTeX XMLCite \textit{B.-g. Zhang}, Acta Math. Appl. Sin. 6, 236--239 (1983; Zbl 0513.34060)