Media type: E-Article Title: Bi-metric theories of gravitation Contributor: Liebscher, Dierck -Ekkehard Published: Springer Science and Business Media LLC, 1975 Published in: General Relativity and Gravitation, 6 (1975) 3, Seite 277-280 Language: English DOI: 10.1007/bf00751572 ISSN: 0001-7701; 1572-9532 Keywords: Physics and Astronomy (miscellaneous) Origination: Footnote: