Classes of functions of ternary logic generated by monotone symmetric functions / A. V. Mikhailovich. //Vestnik Moskovskogo Universiteta. Seriya 1. Matematika. Mekhanika. 2009. № 1. P. 33-38 [Moscow Univ. Math. Bulletin. Vol. 64, N 1, 2009. P. 34-38].
Closed classes of functions of the three-valued logic whose generating systems consist of monotone symmetric functions taking values in the set