%0 Journal Article %A V. V. Konnov %T The asymptotic pseudoconformal structure on a~four-dimensional hypersurface and its completely isotropic two-dimensional submanifolds %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1992 %P 71-79 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1992_6_a8/ %G ru %F IVM_1992_6_a8