@article{1261154046,
author = {KATO, Tosio},
title = {On finite-dimensional perturbations of self-adjoint operators.},
journal = {J. Math. Soc. Japan},
volume = {9},
number = {4},
year = {1957},
pages = { 239-249},
language = {en},
url = {http://dml.mathdoc.fr/item/1261154046}
}
KATO, Tosio. On finite-dimensional perturbations of self-adjoint operators.. J. Math. Soc. Japan, Tome 9 (1957) no. 4, pp. 239-249. http://gdmltest.u-ga.fr/item/1261154046/