%0 Journal Article %A Michal Greguš %A Milan Gera %T Some results in the theory of a third-order linear differential equation %J Annales Polonici Mathematici %D 1983 %P 93-102 %V 42 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-42-1-93-102/ %R 10.4064/ap-42-1-93-102 %G en %F 10_4064_ap_42_1_93_102