New Kinds of Fuzzy Ideals in BCI-algebras. - Guangji Zhang; Cheng Zhang; Zixin Liu; Jiatai Gang (Fuzzy Optim. Decis. Mak., 2006)

An ordering method of fuzzy sets based on rough fuzzy numbers. - Zixin Liu; Xuesheng Liu; Mingming Liu; Jiatai Gang (MFI, 2014)