TY  - JOUR
AU  - S. Yamada
TI  - The minimal number of Seifert circles equals the braid index of a link.
JO  - Inventiones mathematicae
PY  - 1987
SP  - 347
EP  - 356
VL  - 89
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1987__89_143484/
ID  - IM_1987__89_143484
ER  -