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@article{MM2_1980__31_154709, author = {D. Happel and U. Preiser}, title = {Binary {Polyhedral} {Groups} and {Euclidean} {Diagrams.}}, journal = {Manuscripta mathematica}, pages = {317--330}, publisher = {mathdoc}, volume = {31}, year = {1980}, zbl = {0436.20005}, url = {http://geodesic.mathdoc.fr/item/MM2_1980__31_154709/} }
D. Happel; U. Preiser. Binary Polyhedral Groups and Euclidean Diagrams.. Manuscripta mathematica, Tome 31 (1980), pp. 317-330. http://geodesic.mathdoc.fr/item/MM2_1980__31_154709/