TY - JOUR AU - N. V. Ivanov TI - Algebraic properties of the Teichmüller modular group JO - Doklady Akademii Nauk PY - 1984 SP - 786 EP - 789 VL - 275 IS - 4 UR - http://geodesic.mathdoc.fr/item/DAN_1984_275_4_a3/ LA - ru ID - DAN_1984_275_4_a3 ER -