%0 Journal Article %A Markowski, K. A. %T Minimal positive realizations of linear continuous-time fractional descriptor systems: Two cases of an input-output digraph structure %J International Journal of Applied Mathematics and Computer Science %D 2018 %P 9-24 %V 28 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IJAMCS_2018_28_1_a0/ %G en %F IJAMCS_2018_28_1_a0