@article{IVM_1994_2_a8,
     author = {A. K. Rybnikov},
     title = {Zero curvature representations generated by the geometry of a~second-order partial differential equation},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {44--49},
     publisher = {mathdoc},
     number = {2},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1994_2_a8/}
}