@article{FCAA_2007_10_2_a4,
     author = {Diethelm, Kai},
     title = {Smoothness {Properties} of {Solutions} of {Caputo-Type} {Fractional} {Differential} {Equations}},
     journal = {Fractional calculus and applied analysis},
     pages = {151--160},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/FCAA_2007_10_2_a4/}
}