@article{DAN_1977_234_2_a2,
     author = {V. V. Gorlov},
     title = {On closed classes of $k$-valued logic, all superclasses of which have only trivial congruences},
     journal = {Doklady Akademii Nauk},
     pages = {273--276},
     publisher = {mathdoc},
     volume = {234},
     number = {2},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_234_2_a2/}
}