CJCU
A Theoretical Study of Structures and Electronic Spectra of C28X4(X=H,Cl)and CX4(X=H,Cl)
FENG Ji-Kang, TIAN ei-Quan, TENG Qi-wen, SUN Jia-Zhong
Chem. J. Chinese Universities . 1995, (8): 1265 -1269 .