Kelevedjiev, Petio Solvability of singular second-order initial value problems. (English) Zbl 1355.34024 Electron. J. Differ. Equ. 2016, Paper No. 273, 8 p. (2016). Reviewer: Jan Tomeček (Olomouc) MSC: 34A12 PDFBibTeX XMLCite \textit{P. Kelevedjiev}, Electron. J. Differ. Equ. 2016, Paper No. 273, 8 p. (2016; Zbl 1355.34024) Full Text: Link
Kelevedjiev, Petio S. Solvability of a second-order singular boundary-value problem. (English) Zbl 1260.34036 Electron. J. Differ. Equ. 2012, Paper No. 99, 8 p. (2012). MSC: 34B16 34B15 PDFBibTeX XMLCite \textit{P. S. Kelevedjiev}, Electron. J. Differ. Equ. 2012, Paper No. 99, 8 p. (2012; Zbl 1260.34036) Full Text: EMIS
Kelevedjiev, P. S. Positive solutions of nonsingular and singular second order initial value problems. (English) Zbl 1399.34038 Int. Electron. J. Pure Appl. Math. 2, No. 3, 117-127 (2010). MSC: 34A12 PDFBibTeX XMLCite \textit{P. S. Kelevedjiev}, Int. Electron. J. Pure Appl. Math. 2, No. 3, 117--127 (2010; Zbl 1399.34038) Full Text: Link
Kelevedjiev, Petio S. Existence of solutions to first-order singular and nonsingular initial value problems. (English) Zbl 1176.34021 Electron. J. Differ. Equ. 2008, Paper No. 151, 9 p. (2008). MSC: 34B15 34B16 34A09 PDFBibTeX XMLCite \textit{P. S. Kelevedjiev}, Electron. J. Differ. Equ. 2008, Paper No. 151, 9 p. (2008; Zbl 1176.34021) Full Text: EuDML EMIS
Kelevedjiev, Petio Existence of positive solutions to a singular second order boundary value problem. (English) Zbl 1014.34013 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 50, No. 8, 1107-1118 (2002). Reviewer: Sergei A.Brykalov (Ekaterinburg) MSC: 34B18 34B16 PDFBibTeX XMLCite \textit{P. Kelevedjiev}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 50, No. 8, 1107--1118 (2002; Zbl 1014.34013) Full Text: DOI
Kelevedjiev, Petio Existence results for singular initial value problems for first order differential equations. (English) Zbl 0936.34004 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 39, No. 1, 65-77 (2000). Reviewer: Igor Andrianov (Köln) MSC: 34A12 PDFBibTeX XMLCite \textit{P. Kelevedjiev}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 39, No. 1, 65--77 (2000; Zbl 0936.34004) Full Text: DOI
Kelevedjiev, Petio Nonnegative solutions to some singular second-order boundary value problems. (English) Zbl 0929.34022 Nonlinear Anal., Theory Methods Appl. 36, No. 4, A, 481-494 (1999). Reviewer: J.Andres (Olomouc) MSC: 34B16 34B15 PDFBibTeX XMLCite \textit{P. Kelevedjiev}, Nonlinear Anal., Theory Methods Appl. 36, No. 4, 481--494 (1999; Zbl 0929.34022) Full Text: DOI
Kelevedjiev, Petio On the existence of solutions to boundary value problems for second-order differential equations. (English) Zbl 0932.34015 Nonlinear Anal., Theory Methods Appl. 32, No. 4, 563-574 (1998). Reviewer: A.I.Kolosov (Khar’kov) MSC: 34B15 PDFBibTeX XMLCite \textit{P. Kelevedjiev}, Nonlinear Anal., Theory Methods Appl. 32, No. 4, 563--574 (1998; Zbl 0932.34015) Full Text: DOI
Kelevedjiev, Petio Solvability of two-point boundary value problems. (English) Zbl 0864.34013 Nonlinear Anal., Theory Methods Appl. 27, No. 3, 309-320 (1996). Reviewer: P.Zezza (Firenze) MSC: 34B15 34C11 PDFBibTeX XMLCite \textit{P. Kelevedjiev}, Nonlinear Anal., Theory Methods Appl. 27, No. 3, 309--320 (1996; Zbl 0864.34013) Full Text: DOI
Kelevedjiev, Petio Nonexistence of solutions for two-point boundary value problems. (English) Zbl 0797.34020 Nonlinear Anal., Theory Methods Appl. 22, No. 2, 225-228 (1994). Reviewer: A.Boucherif (Tlemcen) MSC: 34B15 PDFBibTeX XMLCite \textit{P. Kelevedjiev}, Nonlinear Anal., Theory Methods Appl. 22, No. 2, 225--228 (1994; Zbl 0797.34020) Full Text: DOI
Kelevedjiev, Petio Existence of solutions for two-point boundary value problems. (English) Zbl 0797.34019 Nonlinear Anal., Theory Methods Appl. 22, No. 2, 217-224 (1994). Reviewer: A.Boucherif (Tlemcen) MSC: 34B15 PDFBibTeX XMLCite \textit{P. Kelevedjiev}, Nonlinear Anal., Theory Methods Appl. 22, No. 2, 217--224 (1994; Zbl 0797.34019) Full Text: DOI