@article{DAN_1988_299_4_a23,
     author = {M. V. Pyatakhin and A. F. Suchkov},
     title = {Small-scale two-dimensional self-focusing},
     journal = {Doklady Akademii Nauk},
     pages = {868--872},
     year = {1988},
     volume = {299},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_299_4_a23/}
}