@article{JCA_2010_17_3_JCA_2010_17_3_a17,
     author = {A. Ioffe},
     title = {Typical {Convexity} {(Concavity)} of {Dini-Hadamard} {Upper} {(Lower)} {Directional} {Derivatives} of {Functions} on {Separable} {Banach} {Spaces}},
     journal = {Journal of convex analysis},
     pages = {1019--1032},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {2010},
     url = {http://geodesic.mathdoc.fr/item/JCA_2010_17_3_JCA_2010_17_3_a17/}
}