Electronegativity Topologic Index—A New Method for Numerization of Structural Information
Zhou Jia-Ju, Xie Gui-Rong, Xie Qian, Sun Hong-Mei, Feng Jun, Xu Zhi-Hong
Acta Phys. -Chim. Sin. . 1995, (09): 777 -780 .  DOI: 10.3866/PKU.WHXB19950903