@article{RM_2003_58_5_a0,
     author = {V. G. Kanovei and V. A. Lyubetskii},
     title = {On some classical problems of descriptive set theory},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {839--927},
     publisher = {mathdoc},
     volume = {58},
     number = {5},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2003_58_5_a0/}
}