@article{DAN_1971_196_6_a9,
     author = {N. N. Aizenberg and Yu. L. Ivaskiv and D. A. Pospelov},
     title = {A certain generalization of threshold functions},
     journal = {Doklady Akademii Nauk},
     pages = {1287--1290},
     publisher = {mathdoc},
     volume = {196},
     number = {6},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_196_6_a9/}
}