Ohba's conjecture is true for graphs with independence number at most three. - Yufa Shen; Wenjie He; Guoping Zheng; Yanpo Li (Appl. Math. Lett., 2009)

Multi-attribute Group Decision-making Method Based on Triangular Intuitionistic Fuzzy Number and 2-Tuple Linguistic Information. - Xiaoyun Yue; GuoKun Xia; Yanpo Li (J. Softw., 2012)