%0 Journal Article
%A I. I. Endovickii
%T Certain sufficient conditions for instability of the solutions of second order linear differential equations
%J Izvestiâ vysših učebnyh zavedenij. Matematika
%D 1969
%P 58-61
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IVM_1969_6_a6/
%G ru
%F IVM_1969_6_a6