@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},
     year = {1991},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1991_9_a10/}
}