Voir la notice de l'article provenant de la source Math-Net.Ru
@article{TRSPY_1992_193_a33, author = {E. V. Troitskii}, title = {An exact formula for the index of an equivariant $C^*$-elliptic operator}, journal = {Informatics and Automation}, pages = {178--182}, publisher = {mathdoc}, volume = {193}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1992_193_a33/} }
E. V. Troitskii. An exact formula for the index of an equivariant $C^*$-elliptic operator. Informatics and Automation, Topology and its applications, Tome 193 (1992), pp. 178-182. http://geodesic.mathdoc.fr/item/TRSPY_1992_193_a33/