@article{CMUC_2008__49_3_a11,
     author = {Leiderman, A. and Protasov, I. V.},
     title = {Cellularity of a space of subgroups of a discrete group},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {519--522},
     publisher = {mathdoc},
     volume = {49},
     number = {3},
     year = {2008},
     mrnumber = {2490444},
     zbl = {1212.54100},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2008__49_3_a11/}
}