Bobisud, L. E.; O’Regan, Donal Existence of positive solutions for singular ordinary differential equations with nonlinear boundary conditions. (English) Zbl 0857.34033 Proc. Am. Math. Soc. 124, No. 7, 2081-2087 (1996). Reviewer: A.Szulkin (Stockholm) MSC: 34B15 34B18 PDFBibTeX XMLCite \textit{L. E. Bobisud} and \textit{D. O'Regan}, Proc. Am. Math. Soc. 124, No. 7, 2081--2087 (1996; Zbl 0857.34033) Full Text: DOI
Bobisud, L. E.; O’Regan, D. Boundary value problems for first-order differential equations. (English) Zbl 0615.34012 Proc. Am. Math. Soc. 99, 501-506 (1987). Reviewer: A.Boucherif MSC: 34B15 34B10 PDFBibTeX XMLCite \textit{L. E. Bobisud} and \textit{D. O'Regan}, Proc. Am. Math. Soc. 99, 501--506 (1987; Zbl 0615.34012) Full Text: DOI
Bobisud, L. E. Asymptotic behavior of solutions of perturbed linear systems. (English) Zbl 0258.34050 Proc. Am. Math. Soc. 35, 457-463 (1972). MSC: 34E05 34E10 34A30 PDFBibTeX XMLCite \textit{L. E. Bobisud}, Proc. Am. Math. Soc. 35, 457--463 (1972; Zbl 0258.34050) Full Text: DOI
Bobisud, L. E. Oscillation of nonlinear second-order equations. (English) Zbl 0186.41903 Proc. Am. Math. Soc. 23, 501-505 (1969). PDFBibTeX XMLCite \textit{L. E. Bobisud}, Proc. Am. Math. Soc. 23, 501--505 (1969; Zbl 0186.41903) Full Text: DOI