@article{1181072973,
author = {Herrero, Domingo A.},
title = {The Diagonal Entries of a Hilbert Space Operator},
journal = {Rocky Mountain J. Math.},
volume = {21},
number = {4},
year = {1991},
pages = { 857-865},
language = {en},
url = {http://dml.mathdoc.fr/item/1181072973}
}
Herrero, Domingo A. The Diagonal Entries of a Hilbert Space Operator. Rocky Mountain J. Math., Tome 21 (1991) no. 4, pp. 857-865. http://gdmltest.u-ga.fr/item/1181072973/