@article{DM_2012_24_2_a6,
     author = {S. S. Marchenkov},
     title = {Atoms of the lattice of positively closed classes of three-valued logic},
     journal = {Diskretnaya Matematika},
     pages = {79--91},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_2012_24_2_a6/}
}