@article{MZ_1971__121_171540,
     author = {Desmond W. Evans},
     title = {Spectral {Theory} of the {Dirac} {Operator.}},
     journal = {Mathematische Zeitschrift},
     pages = {1--23},
     publisher = {mathdoc},
     volume = {121},
     year = {1971},
     zbl = {0204.16301},
     url = {http://geodesic.mathdoc.fr/item/MZ_1971__121_171540/}
}