Nonlinear Oscillations, cilt.8, sa.3, ss.289-295, 2005 (Scopus)
The paper deals with the existence of positive (nonnegative) solutions of linear homogeneous impulsive differential equations. The main result is also applied to the investigation of a similar problem for higher-order linear homogeneous impulsive differential equations. All results are formulated in terms of coefficients of the equations. © Springer Science+Business Media, Inc. 2005.