TY - JOUR AU - Ernst Dieterich TI - Existence and construction of two-dimensional invariant subspaces for pairs of rotations JO - Colloquium Mathematicum PY - 2009 SP - 203 EP - 211 VL - 114 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm114-2-4/ DO - 10.4064/cm114-2-4 LA - en ID - 10_4064_cm114_2_4 ER -