@article{DAN_1977_234_4_a3,
     author = {N. N. Katerinochkina},
     title = {Search for a maximal upper zero for a class of monotone functions in $k$-valued logic},
     journal = {Doklady Akademii Nauk},
     pages = {746--749},
     year = {1977},
     volume = {234},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_234_4_a3/}
}