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@article{AM2_1985__29_137082, author = {Roman Ger}, title = {A consistency equation for three geometries.}, journal = {Aequationes mathematicae}, pages = {50--55}, publisher = {mathdoc}, volume = {29}, year = {1985}, zbl = {0577.51016}, url = {http://geodesic.mathdoc.fr/item/AM2_1985__29_137082/} }
Roman Ger. A consistency equation for three geometries.. Aequationes mathematicae, Tome 29 (1985), pp. 50-55. http://geodesic.mathdoc.fr/item/AM2_1985__29_137082/