@article{GDZPPN002295296,
title = {Invariant Metrics.},
journal = {Mathematische Annalen},
volume = {161},
year = {1965},
pages = {89-91},
language = {en},
url = {http://dml.mathdoc.fr/item/GDZPPN002295296}
}
Nakano, H. Invariant Metrics.. Mathematische Annalen, Tome 161 (1965) pp. 89-91. http://gdmltest.u-ga.fr/item/GDZPPN002295296/