@article{JCA_2008_15_1_JCA_2008_15_1_a2,
     author = {W. Hansen and I. Netuka},
     title = {Continuity {Properties} of {Concave} {Functions} in {Potential} {Theory}},
     journal = {Journal of convex analysis},
     pages = {39--53},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {2008},
     url = {http://geodesic.mathdoc.fr/item/JCA_2008_15_1_JCA_2008_15_1_a2/}
}