@article{GDZPPN002061252, title = {Finiteness Properties of Duality Groups}, journal = {Commentarii mathematici Helvetici}, volume = {49}, year = {1974}, pages = {74-83}, zbl = {0279.20041}, url = {http://dml.mathdoc.fr/item/GDZPPN002061252} }
Bieri, Robert; Eckmann, Benno. Finiteness Properties of Duality Groups. Commentarii mathematici Helvetici, Tome 49 (1974) pp. 74-83. http://gdmltest.u-ga.fr/item/GDZPPN002061252/