@article{TMF_1980_42_3_a4,
     author = {A. N. Leznov},
     title = {On~the complete integrability of~a~nonlinear system of~partial differential equations in~two-dimensional space},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {343--349},
     publisher = {mathdoc},
     volume = {42},
     number = {3},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1980_42_3_a4/}
}