@article{IVM_1968_12_a7,
     author = {F. S. Nasrulaev},
     title = {The connectivity of a~complete smooth surface with one-to-one spherical representation},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {62--69},
     publisher = {mathdoc},
     number = {12},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1968_12_a7/}
}