@article{RM_2003_58_6_a16,
     author = {E. V. Shchepin},
     title = {On maps of the two-dimensional sphere},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1218--1219},
     publisher = {mathdoc},
     volume = {58},
     number = {6},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2003_58_6_a16/}
}