%0 Journal Article %A Kaczorek, Tadeusz %T Positivity of fractional descriptor linear discrete-time systems %J International Journal of Applied Mathematics and Computer Science %D 2019 %P 305-310 %V 29 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/IJAMCS_2019_29_2_a6/ %G en %F IJAMCS_2019_29_2_a6