@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/}
}