Media type: E-Article Title: Ghost-free F(R) bigravity and accelerating cosmology Contributor: Nojiri, Shinʼichi; Odintsov, Sergei D. imprint: Elsevier BV, 2012 Published in: Physics Letters B Language: English DOI: 10.1016/j.physletb.2012.08.049 ISSN: 0370-2693 Keywords: Nuclear and High Energy Physics Origination: Footnote: