TY - JOUR AU - Mohammad Zarrin TI - On the norm of the centralizers of a group JO - Colloquium Mathematicum PY - 2017 SP - 87 EP - 91 VL - 149 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm6965-8-2016/ DO - 10.4064/cm6965-8-2016 LA - en ID - 10_4064_cm6965_8_2016 ER -