@ARTICLE{
author={Babinkostova L,Kocinac Ljubisa DR,Scheepers M},
year={2007},
title={Combinatorics of open covers (XI): Menger- and Rothberger-bounded groups},
journal={TOPOLOGY AND ITS APPLICATIONS},
volume={154},
number={7},
pages={1269-1280},
document_type={Article},
} 

@ARTICLE{
author={Babinkostova L,Kocinac Ljubisa DR,Scheepers M},
year={2005},
title={Notes on selection principles in topology (I): Paracompactness},
journal={JOURNAL OF THE KOREAN MATHEMATICAL SOCIETY},
volume={42},
number={4},
pages={709-721},
document_type={Article},
} 

@ARTICLE{
author={Babinkostova L,Kocinac Ljubisa DR,Scheepers M},
year={2004},
title={Combinatorics of open covers (VIII)},
journal={TOPOLOGY AND ITS APPLICATIONS},
volume={140},
number={1},
pages={15-32},
document_type={Article},
}