%0 Journal Article %A S. P. Lavrenyuk %A M. B. Ptashnik %T Problem without initial conditions for a nonlinear pseudoparabolic system %J Differencialʹnye uravneniâ %D 2000 %P 667-673 %V 36 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2000_36_5_a11/ %G ru %F DE_2000_36_5_a11