@article{1104180304, author = {Anghel, N.}, title = {$L^2$-index formulae for perturbed Dirac operators}, journal = {Comm. Math. Phys.}, volume = {126}, number = {3}, year = {1990}, pages = { 77-97}, language = {en}, url = {http://dml.mathdoc.fr/item/1104180304} }
Anghel, N. $L^2$-index formulae for perturbed Dirac operators. Comm. Math. Phys., Tome 126 (1990) no. 3, pp. 77-97. http://gdmltest.u-ga.fr/item/1104180304/