TY - JOUR AU - Brešar, Matej AU - Šemrl, Peter TI - Normal-Preserving Linear Mappings JO - Canadian mathematical bulletin PY - 1994 SP - 306 EP - 309 VL - 37 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1994-046-1/ DO - 10.4153/CMB-1994-046-1 ID - 10_4153_CMB_1994_046_1 ER -