%0 Journal Article %A A. N. Veissenberg %A B. I. Kushchev %T On the question of the stability of motion in the critical case with an even number of zero roots %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1974 %P 24-28 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1974_2_a2/ %G ru %F IVM_1974_2_a2