1. Chajda I., Halaš R., Kühr J.: Many-valued quantum algebras. Algebra Universalis 60, 63–90 (2009)
2. Chovanec F., Kôpka F.: Boolean D-posets. Tatra Mt. Math. Publ. 10, 183–197 (1997)
3. Constantinescu, C.: Some properties of spaces of measures. Atti Sem. Mat. Fis. Univ. Modena 35(suppl.), 1–286 (1989)
4. Dvurečenskij, A., Graziano, M.G.: Remarks on representations of minimal clans. Tatra Mt. Math. Publ. 15, 31–53 (1998). Quantum structures, II (Liptovský Ján, 1998)
5. Dvurečenskij A., Graziano M.G.: On representations of commutative BCK-algebras. Demonstratio Math. 32, 227–246 (1999)