@article{MAN_1994__298_2_165192,
     author = {Manlio Bordoni},
     title = {Spectral estimates for {Schr\"odinger} and {Dirac-type} operators on {Riemannian} manifolds.},
     journal = {Mathematische Annalen},
     pages = {693--718},
     publisher = {mathdoc},
     volume = {298},
     number = {2},
     year = {1994},
     zbl = {0791.58094},
     url = {http://geodesic.mathdoc.fr/item/MAN_1994__298_2_165192/}
}