@ARTICLE{Rogowski_K._Positivity_2011, author={Rogowski, K.}, volume={59}, number={No 2}, journal={Bulletin of the Polish Academy of Sciences Technical Sciences}, pages={195-200}, howpublished={online}, year={2011}, title={Positivity and stability of fractional 2D Lyapunov systems described by the Roesser model}, URL={http://journals.pan.pl/Content/83307/PDF/09_paper.pdf}, doi={10.2478/v10175-011-0024-z}, }