%0 Journal Article %A Yu. D. Pletner %A A. G. Sveshnikov %T Nonclassical initial-boundary value problems in the theory of unsteady internal waves %J Vestnik Moskovskogo universiteta. Matematika, mehanika %D 1996 %P 80-82 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/VMUMM_1996_6_a26/ %G ru %F VMUMM_1996_6_a26