Voir la notice de l'article provenant de la source Math-Net.Ru
@article{FAA_1979_13_4_a14, author = {G. G. Kasparov}, title = {The $K$-functor in the theory of extensions of $C^*$-algebras}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {73--74}, publisher = {mathdoc}, volume = {13}, number = {4}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1979_13_4_a14/} }
G. G. Kasparov. The $K$-functor in the theory of extensions of $C^*$-algebras. Funkcionalʹnyj analiz i ego priloženiâ, Tome 13 (1979) no. 4, pp. 73-74. http://geodesic.mathdoc.fr/item/FAA_1979_13_4_a14/