@article{1102720214, author = {Valette, Alain}, title = {A remark on the Kasparov groups ${\rm Ext}(A,\,B)$.}, journal = {Pacific J. Math.}, volume = {109}, number = {2}, year = {1983}, pages = { 247-255}, language = {en}, url = {http://dml.mathdoc.fr/item/1102720214} }
Valette, Alain. A remark on the Kasparov groups ${\rm Ext}(A,\,B)$.. Pacific J. Math., Tome 109 (1983) no. 2, pp. 247-255. http://gdmltest.u-ga.fr/item/1102720214/