@article{DAN_1978_241_1_a10,
     author = {M. N. Kogan and A. N. Kucherov},
     title = {On self-focusing of a {Gaussian} beam in a supersonic gas flow},
     journal = {Doklady Akademii Nauk},
     pages = {48--51},
     publisher = {mathdoc},
     volume = {241},
     number = {1},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_241_1_a10/}
}