@article{TRSPY_2006_252_a19,
     author = {A. V. Ostrovsky},
     title = {Maps of {Borel} {Sets}},
     journal = {Informatics and Automation},
     pages = {237--260},
     publisher = {mathdoc},
     volume = {252},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2006_252_a19/}
}