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@article{IM_1992__107_1_143967, author = {Daniel S. Freed and Richard B. Melrose}, title = {A mod k index theorem.}, journal = {Inventiones mathematicae}, pages = {283--300}, publisher = {mathdoc}, volume = {107}, number = {1}, year = {1992}, zbl = {0760.58039}, url = {http://geodesic.mathdoc.fr/item/IM_1992__107_1_143967/} }
Daniel S. Freed; Richard B. Melrose. A mod k index theorem.. Inventiones mathematicae, Tome 107 (1992) no. 1, pp. 283-300. http://geodesic.mathdoc.fr/item/IM_1992__107_1_143967/