%0 Journal Article %A V. S. Gritsevich %T Asymmetric layers and differential operators in the field theory of discontinuous functions in a~two-dimensional domain %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 1989 %P 79-82 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_1989_8_a13/ %G ru %F IVM_1989_8_a13