@article{03906783,
title = {Transformations which preserve convexity.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {8},
year = {1985},
pages = {49-55},
doi = {10.1155/S0161171285000047},
zbl = {0568.26004},
language = {en},
url = {http://dml.mathdoc.fr/item/03906783}
}
Fontenot, Robert A.; Proschan, Frank. Transformations which preserve convexity.. International Journal of Mathematics and Mathematical Sciences, Tome 8 (1985) pp. 49-55. doi : 10.1155/S0161171285000047. http://gdmltest.u-ga.fr/item/03906783/