@article{JCA_2010_17_2_JCA_2010_17_2_a4,
     author = {L. Vesely and L. Zaj{\'\i}cek},
     title = {On {Extensions} of {D.} {C.} {Functions} and {Convex} {Functions}},
     journal = {Journal of convex analysis},
     pages = {427--44},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {2010},
     url = {http://geodesic.mathdoc.fr/item/JCA_2010_17_2_JCA_2010_17_2_a4/}
}