@ARTICLE{Kaczorek_Tadeusz_Determination_2012, author={Kaczorek, Tadeusz}, number={No 4}, journal={Archives of Control Sciences}, howpublished={online}, year={2012}, publisher={Committee of Automatic Control and Robotics PAS}, title={Determination of positive realizations with reduced numbers of delays or without delays for discrete-time linear systems}, URL={http://ochroma.man.poznan.pl/Content/84255/PDF/7.pdf}, doi={10.2478/v10170-011-0035-x}, }