@article{DAN_1970_190_5_a5,
     author = {R. V. Freivald},
     title = {Codings of finite sets, and a completeness criterion to within the accuracy of the coding in three-valued logic},
     journal = {Doklady Akademii Nauk},
     pages = {1034--1037},
     publisher = {mathdoc},
     volume = {190},
     number = {5},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1970_190_5_a5/}
}