@article{ASENS_1989_4_22_4_515_0,
     author = {Helffer, B. and Nourrigat, J. and Wang, X. P.},
     title = {Sur le spectre de l{\textquoteright}\'equation de {Dirac} (dans $\mathbb {R}^3$ ou $\mathbb {R}^2$) avec champ magn\'etique},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {515--533},
     publisher = {Elsevier},
     volume = {4e s{\'e}rie, 22},
     number = {4},
     year = {1989},
     doi = {10.24033/asens.1591},
     mrnumber = {91e:35155},
     zbl = {0703.35127},
     language = {fr},
     url = {http://www.numdam.org/articles/10.24033/asens.1591/}
}