@article{JRAM_1983__344_152568,
     author = {Joachim Cuntz},
     title = {K-theoretic amenability for discrete groups.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {180--195},
     publisher = {mathdoc},
     volume = {344},
     year = {1983},
     zbl = {0511.46066},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1983__344_152568/}
}