@article{ZVMMF_1974_14_4_a26,
     author = {Yu. N. Karamzin},
     title = {Difference schemes for computations of three-frequency interactions of electromagnetic waves in a nonlinear medium with quadratic polarization},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1058--1062},
     publisher = {mathdoc},
     volume = {14},
     number = {4},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1974_14_4_a26/}
}