@article{05019253,
title = {Invariance of the Cauchy mean-value expression with an application to the problem of representation of Cauchy means.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2005},
year = {2005},
pages = {2895-2912},
doi = {10.1155/IJMMS.2005.2895},
zbl = {1121.39021},
language = {en},
url = {http://dml.mathdoc.fr/item/05019253}
}
Berrone, Lucio R. Invariance of the Cauchy mean-value expression with an application to the problem of representation of Cauchy means.. International Journal of Mathematics and Mathematical Sciences, Tome 2005 (2005) pp. 2895-2912. doi : 10.1155/IJMMS.2005.2895. http://gdmltest.u-ga.fr/item/05019253/