@article{1077468348,
author = {Marcus, Marvin},
title = {All linear operators leaving the unitary group invariant},
journal = {Duke Math. J.},
volume = {26},
number = {1},
year = {1959},
pages = { 155-163},
language = {en},
url = {http://dml.mathdoc.fr/item/1077468348}
}
Marcus, Marvin. All linear operators leaving the unitary group invariant. Duke Math. J., Tome 26 (1959) no. 1, pp. 155-163. http://gdmltest.u-ga.fr/item/1077468348/