@ARTICLE{Bartosiewicz_Z._On_2013, author={Bartosiewicz, Z.}, volume={61}, number={No 4}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={905-910}, howpublished={online}, year={2013}, title={On positive reachability of time-variant linear systems on time scales}, URL={http://www.czasopisma.pan.pl/Content/83830/PDF/18_paper.pdf}, doi={10.2478/bpasts-2013-0097}, }