@article{02100336,
title = {A new look at boundary perturbations of generators.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2004},
year = {2004},
zbl = {1067.47053},
language = {en},
url = {http://dml.mathdoc.fr/item/02100336}
}
Nickel, Gregor. A new look at boundary perturbations of generators.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2004 (2004) . http://gdmltest.u-ga.fr/item/02100336/