de Broglie-Proca and Bopp-Podolsky massive photon gases in cosmologyR. R. Cuzinatto, E. M. de Morais, L. G. Medeiros, C. Naldoni de Souza and B. M. PimentelEPL, 118 1 (2017) 19001DOI: https://doi.org/10.1209/0295-5075/118/19001