CJCU
Characterization of Crosslinked Poly (ether urethane)and Study of Its Transitions and Free-Volume Properties with Positron Annihilation
LIU Hao, GUO Jun-Shi, XIE Hong-Quan, WANG Bo, LI Shi-Qing, WANG Shao-Jie
Chem. J. Chinese Universities . 1994, (4): 603 -607 .