%0 Journal Article %A Liu, Yuji %T Existence of solutions of impulsive boundary value problems for singular fractional differential systems %J Mathematica Bohemica %D 2017 %P 405-444 %V 142 %N 4 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/MB.2017.0029-14/ %R 10.21136/MB.2017.0029-14 %G en %F 10_21136_MB_2017_0029_14