@article{EJDE_2011__2011__a90,
     author = {Abbas,  Syed},
     title = {Existence of solutions to fractional order ordinary and delay differential equations and applications},
     journal = {Electronic journal of differential equations},
     year = {2011},
     volume = {2011},
     zbl = {1211.34096},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2011__2011__a90/}
}