@article{DAN_1969_186_5_a5,
     author = {M. I. Kanovich},
     title = {The complexity of the reduction of algorithms},
     journal = {Doklady Akademii Nauk},
     pages = {1008--1009},
     publisher = {mathdoc},
     volume = {186},
     number = {5},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_186_5_a5/}
}