@inproceedings{Lesgourgues:2012ep, author = "Lesgourgues, Julien", title = "{Cosmology and dark energy: theory}", doi = "10.22323/1.134.0015", booktitle = "Proceedings of XXIst International Europhysics Conference on High Energy Physics {\textemdash} PoS(EPS-HEP2011)", year = 2012, volume = "134", pages = "015" }