@article{05224781,
title = {When Lagrangean and quasi-arithmetic means coincide.},
journal = {JIPAM. Journal of Inequalities in Pure \& Applied Mathematics [electronic only]},
volume = {8},
year = {2007},
zbl = {1197.26055},
language = {en},
url = {http://dml.mathdoc.fr/item/05224781}
}
Jarczyk, Justyna. When Lagrangean and quasi-arithmetic means coincide.. JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only], Tome 8 (2007) . http://gdmltest.u-ga.fr/item/05224781/