%0 Journal Article %A I. I. Endovickii %T Certain conditions for the instability of the solutions of the equation $u^n+p(x)u=0$ %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1974 %P 47-51 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1974_1_a5/ %G ru %F IVM_1974_1_a5