@article{DAN_1969_189_4_a14,
     author = {M. I. Dekhtyar'},
     title = {Impossibility of eliminating complete enumeration in computing functions from their diagrams},
     journal = {Doklady Akademii Nauk},
     pages = {748--751},
     publisher = {mathdoc},
     volume = {189},
     number = {4},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_189_4_a14/}
}