@article{MAN_1992__293_4_164943,
     author = {Christian B\"ar},
     title = {Lower eigenvalue estimates for {Dirac} operators.},
     journal = {Mathematische Annalen},
     pages = {39--46},
     publisher = {mathdoc},
     volume = {293},
     number = {4},
     year = {1992},
     zbl = {0741.58046},
     url = {http://geodesic.mathdoc.fr/item/MAN_1992__293_4_164943/}
}