TY - JOUR AU - G. M. Petersen TI - Pairs of matrices and unbounded sequences JO - Commentationes Mathematicae PY - 1983 SP - 101 EP - 107 VL - 23 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.14708/cm.v23i1.6043/ DO - 10.14708/cm.v23i1.6043 LA - pl ID - 10_14708_cm_v23i1_6043 ER -