@article{IM2_1976_10_6_a7,
     author = {V. K. Beloshapka},
     title = {On a~metric property of analytic sets},
     journal = {Izvestiya. Mathematics},
     pages = {1333--1338},
     year = {1976},
     volume = {10},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1976_10_6_a7/}
}