@article{GDZPPN00233853X,
title = {On the essential spectrum of Dirac operators with spherically symmetric potentials.},
journal = {Mathematische Annalen},
volume = {295},
year = {1993},
pages = {117-132},
zbl = {0796.35120},
url = {http://dml.mathdoc.fr/item/GDZPPN00233853X}
}
Schmidt, Karl Michael. On the essential spectrum of Dirac operators with spherically symmetric potentials.. Mathematische Annalen, Tome 295 (1993) pp. 117-132. http://gdmltest.u-ga.fr/item/GDZPPN00233853X/