@article{TRSPY_1973_133_a2,
     author = {A. A. Lyapunov},
     title = {The works of {P.\,S.~Novikov} in the area of descriptive set theory},
     journal = {Informatics and Automation},
     pages = {11--22},
     publisher = {mathdoc},
     volume = {133},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1973_133_a2/}
}