%0 Journal Article %A A. A. Petroff %A Yu. P. Popov %A Yu. V. Pukhnachev %T Evaluation of the proper vibrations of a fluid in a fixed vessel by the variational method %J Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki %D 1964 %P 880-895 %V 4 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZVMMF_1964_4_5_a7/ %G ru %F ZVMMF_1964_4_5_a7