@article{IVM_1992_6_a8,
     author = {V. V. Konnov},
     title = {The asymptotic pseudoconformal structure on a~four-dimensional hypersurface and its completely isotropic two-dimensional submanifolds},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {71--79},
     publisher = {mathdoc},
     number = {6},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1992_6_a8/}
}