@article{GDZPPN002320487,
title = {Selfadjoint Means and Operator Monotone Functions.},
journal = {Mathematische Annalen},
volume = {255},
year = {1981},
pages = {29-36},
zbl = {0461.47009},
url = {http://dml.mathdoc.fr/item/GDZPPN002320487}
}
Hansen, Frank. Selfadjoint Means and Operator Monotone Functions.. Mathematische Annalen, Tome 255 (1981) pp. 29-36. http://gdmltest.u-ga.fr/item/GDZPPN002320487/