@article{CMH_1992__67_3_140276,
     author = {Beno Eckmann},
     title = {Amenable groups and {Euler} characteristic.},
     journal = {Commentarii mathematici Helvetici},
     pages = {383--393},
     publisher = {mathdoc},
     volume = {67},
     number = {3},
     year = {1992},
     zbl = {0765.57019},
     url = {http://geodesic.mathdoc.fr/item/CMH_1992__67_3_140276/}
}