TY  - JOUR
AU  - E. V. Shchepin
TI  - On maps of the two-dimensional sphere
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 2003
SP  - 1218
EP  - 1219
VL  - 58
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_2003_58_6_a16/
LA  - en
ID  - RM_2003_58_6_a16
ER  -