@article{DAN_1962_142_2_a0,
     author = {Yu. L. Vasil'ev},
     title = {Irreducible disjunctive normal forms for certain classes of truth functions},
     journal = {Doklady Akademii Nauk},
     pages = {263--265},
     publisher = {mathdoc},
     volume = {142},
     number = {2},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_142_2_a0/}
}