TY - JOUR AU - Dieter Happel TI - Hochschild cohomology of piecewise hereditary algebras JO - Colloquium Mathematicum PY - 1998 SP - 261 EP - 266 VL - 78 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-78-2-261-266/ DO - 10.4064/cm-78-2-261-266 LA - en ID - 10_4064_cm_78_2_261_266 ER -