@article{DAN_1985_282_5_a6,
     author = {E. V. Troitskii},
     title = {The index theorem for equivariant $C^*$-elliptic operators},
     journal = {Doklady Akademii Nauk},
     pages = {1059--1061},
     publisher = {mathdoc},
     volume = {282},
     number = {5},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_282_5_a6/}
}