@article{RM_1960_15_1_a23,
     author = {F. I. Frankl'},
     title = {Theorem of existence of weak solution of direct problem of of plane-parallel {Laval} nozzle to a~first approximation},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/RM_1960_15_1_a23/}
}