@article{DAN_1971_198_4_a4,
     author = {A. S. Kuzichev},
     title = {$F^n$-systems of combinatory logic. {Generalized} arithmetic operators},
     journal = {Doklady Akademii Nauk},
     pages = {759--761},
     publisher = {mathdoc},
     volume = {198},
     number = {4},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_198_4_a4/}
}