@article{01046022,
title = {A systematization of convexity concepts for sets and functions.},
journal = {Journal of Convex Analysis},
volume = {4},
year = {1997},
pages = {109-127},
zbl = {0885.52003},
language = {en},
url = {http://dml.mathdoc.fr/item/01046022}
}
Breckner, Wolfgang W.; Kassay, Gábor. A systematization of convexity concepts for sets and functions.. Journal of Convex Analysis, Tome 4 (1997) pp. 109-127. http://gdmltest.u-ga.fr/item/01046022/