The fuzzy hyperbolic inequality index associated with fuzzy random variables. - María Angeles Gil; Miguel López-Díaz; Hortensia López-García (Eur. J. Oper. Res., 1998)

Estimating the fuzzy inequality associated with a fuzzy random variable in random samplings from finite populations. - Hortensia López-García; María Angeles Gil; Norberto Corral; María Teresa López (Kybernetika, 1998)