TY - JOUR AU - H. Zieschang TI - On automorphisms of plane groups JO - Doklady Akademii Nauk PY - 1964 SP - 57 EP - 60 VL - 155 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1964_155_1_a14/ LA - ru ID - DAN_1964_155_1_a14 ER -