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@article{IVM_1996_6_a3, author = {S. G. Leiko}, title = {Isoperimetric extremals of a turn on surfaces in the {Euclidean} space~$E^3$}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {25--32}, publisher = {mathdoc}, number = {6}, year = {1996}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1996_6_a3/} }
S. G. Leiko. Isoperimetric extremals of a turn on surfaces in the Euclidean space~$E^3$. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1996), pp. 25-32. http://geodesic.mathdoc.fr/item/IVM_1996_6_a3/