@article{02220739,
title = {Pseudoinverse formulation of Rayleigh-Schr\"odinger perturbation theory for the symmetric matrix eigenvalue problem.},
journal = {Journal of Applied Mathematics},
volume = {2003},
year = {2003},
pages = {459-485},
doi = {10.1155/S1110757X03303092},
zbl = {1081.65514},
language = {en},
url = {http://dml.mathdoc.fr/item/02220739}
}
McCartin, Brian J. Pseudoinverse formulation of Rayleigh-Schrödinger perturbation theory for the symmetric matrix eigenvalue problem.. Journal of Applied Mathematics, Tome 2003 (2003) pp. 459-485. doi : 10.1155/S1110757X03303092. http://gdmltest.u-ga.fr/item/02220739/