%0 Journal Article %A E. N. Zubov %T Three-dimensional steady gas flows with straight level lines in the presence of the Bernoulli integral %J Doklady Akademii Nauk %D 1976 %P 57-59 %V 227 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1976_227_1_a13/ %G ru %F DAN_1976_227_1_a13