@misc{miscfab37899,
title   = {Cellularity in subgroups of paratopological groups},
author = {Tkachenko, Mikhail G and Tomita, Artur Hideyuki},
year = {2015},
doi = {10.1016/j.topol.2015.05.081},
booktitle   = {Brazilian Conference on General Topology and Set Theory - STW}
}