@article{DAN_1980_252_3_a21,
     author = {B. Ya. Zel'dovich and M. A. Orlova and V. V. Shkunov},
     title = {Nonstationary theory and calculation of the dilay time for four-wave wave-front reversal},
     journal = {Doklady Akademii Nauk},
     pages = {592--594},
     publisher = {mathdoc},
     volume = {252},
     number = {3},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_252_3_a21/}
}