TY - JOUR AU - M. H. Shirdarreh Haghighi TI - Invertibility preserving linear mappings into $M_2({\mathbb C})$ JO - Studia Mathematica PY - 2008 SP - 41 EP - 45 VL - 186 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm186-1-5/ DO - 10.4064/sm186-1-5 LA - en ID - 10_4064_sm186_1_5 ER -