%0 Journal Article %A S. Ya. Yakubov %A K. S. Mamedov %T Completeness of the eigen- and associated functions of certain nonregular boundary-value problems for ordinary differential equations %J Funkcionalʹnyj analiz i ego priloženiâ %D 1980 %P 93-94 %V 14 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FAA_1980_14_4_a23/ %G ru %F FAA_1980_14_4_a23