TY  - JOUR
AU  - H. Zieschang
TI  - On the classification of simple systems of paths on a surface of genus~$2$
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 841
EP  - 844
VL  - 152
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_152_4_a19/
LA  - ru
ID  - DAN_1963_152_4_a19
ER  -