@article{GDZPPN002313421,
title = {Spectrum and the Fixed Point Sets of Isometries. I.},
journal = {Mathematische Annalen},
volume = {219},
year = {1976},
pages = {161-170},
zbl = {0319.53031},
url = {http://dml.mathdoc.fr/item/GDZPPN002313421}
}
Donnelly, Harold. Spectrum and the Fixed Point Sets of Isometries. I.. Mathematische Annalen, Tome 219 (1976) pp. 161-170. http://gdmltest.u-ga.fr/item/GDZPPN002313421/