TY - JOUR AU - M. A. Dalin AU - I. I. Pis'man AU - A. A. Bakhshi-Zade AU - A. A. Buniyat-Zade TI - Copolymerization of ethylene with propylene and $\alpha$-butylene on chromium oxide catalyst JO - Doklady Akademii Nauk PY - 1960 SP - 1084 EP - 1085 VL - 133 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1960_133_5_a24/ LA - ru ID - DAN_1960_133_5_a24 ER -