%0 Journal Article %A Yu. V. Kissin %A V. I. Tsvetkova %A N. M. Chirkov %T The isotacticity of polypropylene as estimated from its infrared spectra %J Doklady Akademii Nauk %D 1963 %P 1162-1165 %V 152 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1963_152_5_a35/ %G ru %F DAN_1963_152_5_a35