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@article{KUKZ_1966_3_3_a22, author = {L. I. Chibrikova and G. V. Markov}, title = {Certain boundary value problems on non-orientable surfaces}, journal = {Trudy seminara po kraevym zada\v{c}am}, pages = {225--229}, publisher = {mathdoc}, volume = {3}, number = {3}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/KUKZ_1966_3_3_a22/} }
L. I. Chibrikova; G. V. Markov. Certain boundary value problems on non-orientable surfaces. Trudy seminara po kraevym zadačam, Trudy Seminara po Kraevym Zadacham, Tome 3 (1966) no. 3, pp. 225-229. http://geodesic.mathdoc.fr/item/KUKZ_1966_3_3_a22/