@article{DE_1980_16_4_a11,
     author = {L. D. Zamkobaya},
     title = {On a method of ``freezing'' for discrete systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {697--704},
     publisher = {mathdoc},
     volume = {16},
     number = {4},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_4_a11/}
}