1. Avron A, Konikowska B (2008) Rough sets and 3-valued logics. Stud Log 90:69–92
2. Balbes R, Dwinger P (1974) Distributive lattices. University of Missouri Press, Columbia
3. Banerjee M (1997) Rough sets and 3-valued Łukasiewicz logic. Fund Inf 31:213–220
4. Birkhoff G (1995) Lattice theory, colloquium publications, vol XXV, 3rd edn. American Mathematical Society, Providence
5. Boicescu V, Filipoiu A, Georgescu G, Rudeanu S (1991) Łukasiewicz-Moisil algebras. North-Holland, Amsterdam