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@article{CMH_1950__24_139009, author = {H. Bieri}, title = {Die 1. {Variation} der {Ma{\ss}zahlen} eines {Elementarkegels.}}, journal = {Commentarii mathematici Helvetici}, pages = {232--237}, publisher = {mathdoc}, volume = {24}, year = {1950}, zbl = {0040.09601}, url = {http://geodesic.mathdoc.fr/item/CMH_1950__24_139009/} }
H. Bieri. Die 1. Variation der Maßzahlen eines Elementarkegels.. Commentarii mathematici Helvetici, Tome 24 (1950), pp. 232-237. http://geodesic.mathdoc.fr/item/CMH_1950__24_139009/