SUBSTITUENT CHEMICAL SHIFT (SCS) AND THE SEQUENCE STRUCTURE OF ETHYLENE-α-OLEFINE COPOLYMERS——Ⅰ. Ethylene-Propylene Copolymers
Zhou Zinan, Li Sanxi, Tian Wenjing, Pang Deren, Huang Baotong
Chinese Journal of Magnetic Resonance . 1990, (4): 439 -444 .