@article{JCA_2015_22_2_JCA_2015_22_2_a14,
     author = {H. Martini and N. M. Nam and A. Robinson},
     title = {On the {Equivalence} of the {Theorems} {Helly,} {Radon,} and {Carath\'eodory} via {Convex} {Analysis}},
     journal = {Journal of convex analysis},
     pages = {591--601},
     year = {2015},
     volume = {22},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JCA_2015_22_2_JCA_2015_22_2_a14/}
}