TY  - JOUR
AU  - S. M. Natanzon
TI  - Supercoverings, $SNEC$-groups, and interior groups of Riemann and Klein supersurfaces
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1990
SP  - 225
EP  - 226
VL  - 45
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1990_45_2_a13/
LA  - en
ID  - RM_1990_45_2_a13
ER  -