@inproceedings{MANDAL:2012HO, author = "MANDAL, Subhayan and Cudell, Jean-Rene", title = "{Pseudoscalar-photon mixing in an expanding Universe}", doi = "10.22323/1.134.0483", booktitle = "Proceedings of XXIst International Europhysics Conference on High Energy Physics {\textemdash} PoS(EPS-HEP2011)", year = 2012, volume = "134", pages = "483" }