CJCU
Studies on Heterocrown Ether(Ⅺ)──The Syntheses or o-Benzene Diselenium Type of Selenacrown Compounds
LI Wei-Ping, WU Jun, LIU Xiu-Fang, XU Han-Sheng
Chem. J. Chinese Universities . 1995, (10): 1559 -1562 .