%0 Journal Article %A Jean Dolbeault %A Maria J. Esteban %A Éric Séré %T General results on the eigenvalues of operators with gaps, arising from both ends of the gaps. Application to Dirac operators %J Journal of the European Mathematical Society %D 2006 %P 243-251 %V 8 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4171/jems/50/ %R 10.4171/jems/50 %F JEMS_2006_8_2_a8