@article{bwmeta1.element.bwnjournal-article-bcpv10i1p147bwm,
author = {Grubb, Gerd},
title = {On the spectral theory of pseudo-differential elliptic boundary problems},
journal = {Banach Center Publications},
volume = {10},
year = {1983},
pages = {147-168},
zbl = {0555.35134},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-bcpv10i1p147bwm}
}
Grubb, Gerd. On the spectral theory of pseudo-differential elliptic boundary problems. Banach Center Publications, Tome 10 (1983) pp. 147-168. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-bcpv10i1p147bwm/