@article{2038,
author = {Beitia, Maria Asunci\'on},
title = {Matrices which commute with a given matrix upon a subspace},
journal = {Portugaliae mathematica},
volume = {43},
year = {1985},
pages = {167-178},
zbl = {0579.15017},
mrnumber = {0875065},
language = {en},
url = {http://dml.mathdoc.fr/item/2038}
}
Beitia, Maria Asunción. Matrices which commute with a given matrix upon a subspace. Portugaliae mathematica, Tome 43 (1985) pp. 167-178. http://gdmltest.u-ga.fr/item/2038/