@article{10_4064_cm125_2_6,
     author = {Taras Banakh and Nadya Lyaskovska},
     title = {Constructing universally small subsets of a given packing index in {Polish} groups},
     journal = {Colloquium Mathematicum},
     pages = {213--220},
     publisher = {mathdoc},
     volume = {125},
     number = {2},
     year = {2011},
     doi = {10.4064/cm125-2-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm125-2-6/}
}