TY  - JOUR
AU  - Yu. E. Alenitsyn
TI  - Extremal properties of mappings onto surfaces with parallel slits
JO  - Izvestiya. Mathematics 
PY  - 1979
SP  - 1
EP  - 8
VL  - 13
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1979_13_1_a0/
LA  - en
ID  - IM2_1979_13_1_a0
ER  -