TY - JOUR AU - Giraldo, Antonio TI - Shape Fibrations, Multivalued Maps and Shape Groups JO - Canadian journal of mathematics PY - 1998 SP - 342 EP - 355 VL - 50 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1998-018-7/ DO - 10.4153/CJM-1998-018-7 ID - 10_4153_CJM_1998_018_7 ER -