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2. Fuzzy relation equations theory as a basis of fuzzy modelling: an overview;Di Nola;Fuzzy Sets and Systems,1991
3. Fuzzy relation equations under a class of triangular norms: a survey and new results;Di Nola;Stochastica,1984
4. Fuzzy relation equations under LSC and USC t-norms and their Boolean solutions;Di Nola;Stochastica,1987
5. Fuzzy relation equations with equality and difference operators;Di Nola;Fuzzy Sets and Systems,1988