%0 Journal Article %A Jan Bochenek %T Nodes of eigenfunctions of a certain class of ordinary differential equations of the fourth order %J Annales Polonici Mathematici %D 1974 %P 349-356 %V 29 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-29-4-349-356/ %R 10.4064/ap-29-4-349-356 %G en %F 10_4064_ap_29_4_349_356