Equivalence class in the set of fuzzy numbers and its application in decision-making problems. - Geetanjali Panda; Motilal Panigrahi; Sudarsan Nanda (Int. J. Math. Math. Sci., 2006)

Convex fuzzy mapping with differentiability and its application in fuzzy optimization. - Motilal Panigrahi; Geetanjali Panda; Sudarsan Nanda (Eur. J. Oper. Res., 2008)