@article{ZVMMF_1990_30_4_a13,
     author = {M. M. Kovalev and A. V. Moshchenskii},
     title = {Search for the maximum upper zero of a~threshold function of multivalued logic},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {620--622},
     publisher = {mathdoc},
     volume = {30},
     number = {4},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1990_30_4_a13/}
}