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@article{IVM_1991_9_a10, author = {M. A. Cheshkova}, title = {On the geometry of a~normalized surface}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {67--68}, publisher = {mathdoc}, number = {9}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1991_9_a10/} }
M. A. Cheshkova. On the geometry of a~normalized surface. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 9 (1991), pp. 67-68. http://geodesic.mathdoc.fr/item/IVM_1991_9_a10/