1. L.-B. Beasley, A. E. Guterman, K. T. Kang, and S. Z. Song, “Idempotent Boolean matrices and majorization,” Fundam. Prikl. Mat., 13, No. 1, 11–29 (2007).
2. G. Birkhoff, Lattice Theory, Amer. Math. Soc., Providence (1967).
3. K. Cechlarova, “Powers of matrices over distributive lattices—a review,” Fuzzy Sets and Systems, 138, 627–641 (2003).
4. I. Duca and M. Duca, “La resolution des equations matricielles boolennes,” Politehn. Univ. Bucharest Sci. Bull. Ser. A Appl. Math. Phys., 61, No. 1–2, 81–90 (1999).
5. G. Gratzer, General Lattice Theory, Akademie, Berlin (1978).