%0 Journal Article %A I. I. Endovickii %T Stability conditions for the solutions of a~linear differential equation of the second order with a~periodic coefficient %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1967 %P 28-33 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1967_5_a4/ %G ru %F IVM_1967_5_a4