CJCU
Preparation and Photochromic Properties of Keggin Type Tungstophosphate Acids Based on Polyvinyl Pyrrolidone
FENG Wei, ZHANG Tie-Rui, LIU Yan, LU Ran, ZHAO Ying-Ying, Yao-Jian-Nian
Chem. J. Chinese Universities . 2001, (5): 830 -832 .