@article{JCA_2014_21_1_JCA_2014_21_1_a8,
     author = {F. J. Garc{\'\i}a-Pacheco and D. Puglisi and G. van Zyl},
     title = {Some {More} {Applications} of the {Hahn-Banach} {Theorem}},
     journal = {Journal of convex analysis},
     pages = {179--188},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {2014},
     url = {http://geodesic.mathdoc.fr/item/JCA_2014_21_1_JCA_2014_21_1_a8/}
}