%0 Journal Article %A I. I. Kal'mushevskii %T The completeness of the eigenfunctions and associated functions of operators in~$L^2[0,l]$ %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1970 %P 61-64 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1970_1_a7/ %G ru %F IVM_1970_1_a7