@article{articled9b16189,
title   = {On the extent of star countable spaces},
author = {Alas, Ofélia Teresa and Junqueira, Lucia Renato and Mill, Jan van and Tkachuk, Vladimir V and Wilson, Richard G},
year = {2011},
doi = {10.2478/s11533-011-0018-y},
journal   = {Central European Journal of Mathematics}
}