%0 Journal Article %A S. P. Lavrenyuk %T A mixed problem for an equation of plate-oscillation type that is degenerate at a finite moment of time %J Differencialʹnye uravneniâ %D 1991 %P 2099-2106 %V 27 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_12_a10/ %G ru %F DE_1991_27_12_a10