Equivalent off-diagonal cosmological models and ekpyrotic scenarios in $$f(R)$$ f ( R ) -modified, massive, and einstein gravity
Crossref DOI link: https://doi.org/10.1140/epjc/s10052-015-3407-8
Published Online: 2015-04-29
Published Print: 2015-04
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Vacaru, Sergiu I.
License valid from 2015-04-01