@ARTICLE{Orłowski_P._Generalized_2012, author={Orłowski, P.}, volume={60}, number={No 1}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={171-178}, howpublished={online}, year={2012}, title={Generalized feedback stability for periodic linear time-varying, discrete-time systems}, URL={http://www.journals.pan.pl/Content/83515/PDF/24_paper.pdf}, doi={10.2478/v10175-012-0024-7}, }