@article{DE_1975_11_11_a12,
     author = {V. G. Zadorozhniy},
     title = {Completely integrable equations in variational derivatives},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2027--2039},
     year = {1975},
     volume = {11},
     number = {11},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_11_a12/}
}