Geodesic
On closed classes of $k$-valued logic that are self-dual with respect to transitive groups
Diskretnaya Matematika, Tome 8 (1996) no. 1, pp. 129-156 
Nguyen Van Hoa. On closed classes of $k$-valued logic that are self-dual with respect to transitive groups. Diskretnaya Matematika, Tome 8 (1996) no. 1, pp. 129-156. http://geodesic.mathdoc.fr/item/DM_1996_8_1_a7/
@article{DM_1996_8_1_a7,
     author = {Nguyen Van Hoa},
     title = {On closed classes of $k$-valued logic that are self-dual with respect to transitive groups},
     journal = {Diskretnaya Matematika},
     pages = {129--156},
     year = {1996},
     volume = {8},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1996_8_1_a7/}
}
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We prove that the structure of the closed classes of $k$-valued logic which are selfdual with respect to the $m$-transitive subgroups of the symmetric groups, $m\ge [k/2]+1$, is finite and consists of closed classes with a finite basis.