Media type: E-Article Title: Une caract�risation Riemannienne du groupe de Heisenberg Contributor: Goze, Michel; Piu, Paola imprint: Springer Science and Business Media LLC, 1994 Published in: Geometriae Dedicata Language: French DOI: 10.1007/bf01263648 ISSN: 0046-5755; 1572-9168 Keywords: Geometry and Topology Origination: Footnote: