@article{TRSPY_2006_252_a9,
     author = {V. G. Kanovei and V. A. Lyubetskii},
     title = {A~Cofinal {Family} of {Equivalence} {Relations} and {Borel} {Ideals} {Generating} {Them}},
     journal = {Informatics and Automation},
     pages = {94--113},
     publisher = {mathdoc},
     volume = {252},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2006_252_a9/}
}