TY - JOUR AU - Wajnryb, Bronisław TI - An elementary approach to the mapping class group of a surface JO - Geometry & topology PY - 1999 SP - 405 EP - 466 VL - 3 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.2140/gt.1999.3.405/ DO - 10.2140/gt.1999.3.405 ID - GT_1999_3_1_a16 ER -