%0 Journal Article %A G. A. Shinkarenko %T Projection-difference approximations for variational problems of pyroelectricity. II. Discretization and solvability of nonstationary problems %J Differencialʹnye uravneniâ %D 1994 %P 317-326 %V 30 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1994_30_2_a14/ %G ru %F DE_1994_30_2_a14