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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 .