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@article{PORMA_1995__52_1_47480, author = {Scherwentke, Przemys{\l}aw}, title = {On the geometry of and .}, journal = {Portugaliae mathematica}, pages = {49--59}, publisher = {mathdoc}, volume = {52}, number = {1}, year = {1995}, zbl = {0844.47024}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1995__52_1_47480/} }
Scherwentke, Przemysław. On the geometry of and .. Portugaliae mathematica, Tome 52 (1995) no. 1, pp. 49-59. http://geodesic.mathdoc.fr/item/PORMA_1995__52_1_47480/