TY - JOUR AU - Larsen, Nadia S. TI - Crossed Products by Semigroups of Endomorphisms and Groups of Partial Automorphisms JO - Canadian mathematical bulletin PY - 2003 SP - 98 EP - 112 VL - 46 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2003-010-2/ DO - 10.4153/CMB-2003-010-2 ID - 10_4153_CMB_2003_010_2 ER -