@article{JCA_2011_18_2_JCA_2011_18_2_a11,
     author = {P. Burai and A. H\'azy},
     title = {On {Approximately} {h-Convex} {Functions}},
     journal = {Journal of convex analysis},
     pages = {447--454},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/JCA_2011_18_2_JCA_2011_18_2_a11/}
}