@article{DAN_1971_196_5_a7,
     author = {I. I. Parovichenko},
     title = {On the descriptive theory of sets in topological spaces},
     journal = {Doklady Akademii Nauk},
     pages = {1024--1027},
     publisher = {mathdoc},
     volume = {196},
     number = {5},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_196_5_a7/}
}