@article{DM_1998_10_3_a1,
     author = {S. S. Marchenkov},
     title = {$A$-closed classes of many-valued logic that contain constants},
     journal = {Diskretnaya Matematika},
     pages = {10--26},
     publisher = {mathdoc},
     volume = {10},
     number = {3},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1998_10_3_a1/}
}