On the convergence of fuzzy-number-valued functions. - Byung Moon Ghil (Fuzzy Sets Syst., 1997)

Integrals of fuzzy-number-valued functions. - Yun Kyong Kim; Byung Moon Ghil (Fuzzy Sets Syst., 1997)

A characterization of compact subsets of fuzzy number space. - Byung Moon Ghil; Sang Yeol Joo; Yun Kyong Kim (Fuzzy Sets Syst., 2001)

Continuity of functions defined on the space of fuzzy sets. - Byung Moon Ghil; Yun Kyong Kim (Inf. Sci., 2003)