"SOME COMPARISOM THEOREMS ON TIME SCALES", International Journal of Pure and Applied Mathematics, 89, 5, 711-718, 2013/12, ELSE2
"Some comparisom theorems on time scales", International Journal of Pure and Applied Mathematics, 89, 5, 711-718, 2013/12, SCI
"Multiple positive solutions of a fourth-order nonlinear singular boundary value problem", INTERNATIONAL JOURNAL OF, Vol. 1, 2007, 17, 825-840, 2007/10, ELSE2
"Some complements of Cauchy's inequality on time scales", J. Ineq. Appl., Issue 2, 2006, 113-131, 2006/12, SCI
"Oscillation Criteria for Nonlinear Differential Equations with Integrable Coefficient,", Math. Nach., 1-2, 145-153, 2005/02, SCI
"Oscillation and Nonoscillation of Solutions of Ssecond Order Linear Differential Equations", Publicationes Mathematicae Deberecen, 1-2, 65, 29-47, 2004/10, SCI
"Multiple Positive Solutions for Boundary Value Problems on a Measure Chain,", Publications Mathematicae Debrecen, 1-2, 62, 227-235, 2003/07, SCI