@article{EJDE_2009__2009__a25,
     author = {Ntouyas,  Sotiris K. and O'Regan,  Donal},
     title = {Some remarks on controllability of evolution equations in {Banach} spaces},
     journal = {Electronic journal of differential equations},
     year = {2009},
     volume = {2009},
     zbl = {1168.93005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a25/}
}