@article{SM_1981_38_4_a4,
     author = {V. V. Gorlov},
     title = {A~sufficient condition for closed classes of $k$-valued logic to have only trivial congruences},
     journal = {Sbornik. Mathematics},
     pages = {507--532},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {1981},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1981_38_4_a4/}
}