%0 Journal Article %A Marko Švec %T Behaviour of solutions of a fourth-order self-adjoint linear differential equation %J Annales Polonici Mathematici %D 1983 %P 333-344 %V 42 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-42-1-333-344/ %R 10.4064/ap-42-1-333-344 %G en %F 10_4064_ap_42_1_333_344