@article{GDZPPN00203901X,
title = {Unitary similarity of projectors.},
journal = {Aequationes mathematicae},
volume = {41},
year = {1991},
pages = {220-224},
zbl = {0749.15005},
url = {http://dml.mathdoc.fr/item/GDZPPN00203901X}
}
Dokovic, Dragomir Z. Unitary similarity of projectors.. Aequationes mathematicae, Tome 41 (1991) pp. 220-224. http://gdmltest.u-ga.fr/item/GDZPPN00203901X/