@article{TMF_1981_46_3_a11,
     author = {A. K. Prikarpatskii},
     title = {Geometrical structure and {B\"acklund} transformations of nonlinear evolution equations possessing {a~Lax} representation},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {382--393},
     year = {1981},
     volume = {46},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1981_46_3_a11/}
}