%0 Journal Article %A G. F. Safina %T Preservation of the frequencies of oscillations of a~pipe with a~liquid %J Sibirskij žurnal industrialʹnoj matematiki %D 2012 %P 124-134 %V 15 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJIM_2012_15_3_a11/ %G ru %F SJIM_2012_15_3_a11