@article{ZVMMF_1986_26_2_a15,
     author = {A. L. Kopa-Ovdienko},
     title = {On employment of {Lagrangian} coordinates for simulation of light beams with strong spase deformations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {311--315},
     year = {1986},
     volume = {26},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1986_26_2_a15/}
}