TY - JOUR AU - Hasegawa, Kei TI - Essential Commutants of Semicrossed Products JO - Canadian mathematical bulletin PY - 2015 SP - 91 EP - 104 VL - 58 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2014-057-x/ DO - 10.4153/CMB-2014-057-x ID - 10_4153_CMB_2014_057_x ER -