@article{MAN_1995__303_4_165367,
     author = {Ulrich Bunke},
     title = {A {K-theoretic} relative index theorem and {Callias-type} {Dirac} operators.},
     journal = {Mathematische Annalen},
     pages = {241--280},
     publisher = {mathdoc},
     volume = {303},
     number = {4},
     year = {1995},
     zbl = {0835.58035},
     url = {http://geodesic.mathdoc.fr/item/MAN_1995__303_4_165367/}
}