CJCU
The Frontier Orbital Energy Level and Spectra of Some Unsymmetrical Bisazo Derivatives of ChromotropicAcid Containing Halogen Groups
Chen Qiong, Luo Mingdao, Cai Ruxiu, Chen Shukang, Lin Zhixin
Chem. J. Chinese Universities . 1985, (6): 493 -498 .