%0 Journal Article %A A. I. Ogurtsov %T On the stability in the large of the solutions of third and fourth order non-linear differential equations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1958 %P 124-129 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1958_1_a11/ %G ru %F IVM_1958_1_a11