%0 Journal Article %A A. K. Rybnikov %T Zero curvature representations generated by the geometry of a~second-order partial differential equation %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1994 %P 44-49 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1994_2_a8/ %G ru %F IVM_1994_2_a8