CJCU
A Theoretical Study of Nonlinear Second-order Optical Properties of 5, 12-Dithia-7, 14-diaza-5, 7, 12, 14-tetrahydropentacene and Related Compounds
FENG Ji-Kang, GAO Xiao-Shun, XIAO Chang-Yong, SUN Chia-Chung
Chem. J. Chinese Universities . 1997, (2): 273 -276 .