The Study on Fuzzy Comprehensive Evaluation Model of Enterprise's Core Competence Based on BSC. - Ligen Yao; Cairong Zhao (ISCID (2), 2009)

Grey system model with the fractional order accumulation. - Lifeng Wu 001; Sifeng Liu; Ligen Yao; Shuli Yan; Ding-Lin Liu (Commun. Nonlinear Sci. Numer. Simul., 2013)

Using fractional order accumulation to reduce errors from inverse accumulated generating operator of grey model. - Lifeng Wu 001; Sifeng Liu; Ligen Yao; Ruiting Xu; Xunping Lei (Soft Comput., 2015)