@article{TM_1988_179_a8,
     author = {V. G. Osmolovskii},
     title = {Rigidity of a~surface with respect to deformations that satisfy first-order nonlinear differential equations},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {165--173},
     year = {1988},
     volume = {179},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1988_179_a8/}
}