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@article{IM2_1987_29_1_a11, author = {E. V. Troitskii}, title = {The equivariant index of $C^*$-elliptic operators}, journal = {Izvestiya. Mathematics }, pages = {207--224}, publisher = {mathdoc}, volume = {29}, number = {1}, year = {1987}, language = {en}, url = {http://geodesic.mathdoc.fr/item/IM2_1987_29_1_a11/} }
E. V. Troitskii. The equivariant index of $C^*$-elliptic operators. Izvestiya. Mathematics , Tome 29 (1987) no. 1, pp. 207-224. http://geodesic.mathdoc.fr/item/IM2_1987_29_1_a11/