Qian-Nan Hu, Yi-Zeng Liang, Ya-Li Wang, Cheng-Jian Xu, Zhong-Da Zeng, Kai-Tai Fang, Xiao-Ling Peng, Hong Yin. External Factor Variable Connectivity Index. Journal of Chemical Information and Computer Sciences, 43(3):773-778, 2003. [doi]
Abstract is missing.