TY  - JOUR
AU  - N. V. Ivanov
TI  - Hielsen numbers of self-naps of surfaces
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1982
SP  - 56
EP  - 65
VL  - 122
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1982_122_a5/
LA  - ru
ID  - ZNSL_1982_122_a5
ER  -