TY - JOUR AU - S. D. Berman AU - E. Sh. Kerer TI - Representations of nilpotent torsion-free groups of class $2$ with two generators JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1977 SP - 70 EP - 71 VL - 11 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1977_11_4_a8/ LA - ru ID - FAA_1977_11_4_a8 ER -