@article{DAN_1969_184_6_a8,
     author = {D. A. Ostroukhov},
     title = {The estimation of the complexity of normal algorithms},
     journal = {Doklady Akademii Nauk},
     pages = {1292--1293},
     publisher = {mathdoc},
     volume = {184},
     number = {6},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1969_184_6_a8/}
}