%0 Journal Article %A Sikora, B. %T Controllability criteria for time-delay fractional systems with a retarded state %J International Journal of Applied Mathematics and Computer Science %D 2016 %P 521-531 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IJAMCS_2016_26_3_a0/ %G en %F IJAMCS_2016_26_3_a0