@article{03611602, title = {On nonamenable groups.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {1}, year = {1978}, pages = {529-532}, doi = {10.1155/S0161171278000526}, zbl = {0394.22005}, language = {en}, url = {http://dml.mathdoc.fr/item/03611602} }
Chen, Su-Shing. On nonamenable groups.. International Journal of Mathematics and Mathematical Sciences, Tome 1 (1978) pp. 529-532. doi : 10.1155/S0161171278000526. http://gdmltest.u-ga.fr/item/03611602/