TY - JOUR AU - J. Płonka TI - On automorphism groups of relational systems and universal algebras JO - Colloquium Mathematicum PY - 1979 SP - 341 EP - 344 VL - 42 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/cm-42-1-341-344/ DO - 10.4064/cm-42-1-341-344 LA - en ID - 10_4064_cm_42_1_341_344 ER -