Towards a fuzzy logic programming system: a fuzzy propositional logic. - Paul C. Rhodes; Sabah Merad Menani (Knowl. Based Syst., 1991)

Towards a fuzzy-logic programming system: a 1st-order fuzzy logic. - Paul C. Rhodes; Sabah Merad Menani (Knowl. Based Syst., 1992)

Towards a fuzzy logic programming system: a clausal form fuzzy logic. - Paul C. Rhodes; Sabah Merad Menani (Knowl. Based Syst., 1995)