@article{1103899891,
author = {Nenciu, G.},
title = {Self-adjointness and invariance of the essential spectrum for Dirac operators defined as quadratic forms},
journal = {Comm. Math. Phys.},
volume = {46},
number = {1},
year = {1976},
pages = { 235-247},
language = {en},
url = {http://dml.mathdoc.fr/item/1103899891}
}
Nenciu, G. Self-adjointness and invariance of the essential spectrum for Dirac operators defined as quadratic forms. Comm. Math. Phys., Tome 46 (1976) no. 1, pp. 235-247. http://gdmltest.u-ga.fr/item/1103899891/