TY - JOUR AU - Gunnar Carlsson TI - Problem Session JO - Homology, homotopy, and applications PY - 2001 SP - 7 EP - 15 VL - 3 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/HHA_2001_3_2_a5/ LA - en ID - HHA_2001_3_2_a5 ER -