@inproceedings{Galanti:2015al, author = "Galanti, Giorgio and Roncadelli, M. and Tavecchio, Fabrizio and Bonnoli, Giacomo", title = "{Hints for an axion-like particle from PKS 1222+216}", doi = "10.22323/1.218.0022", booktitle = "Proceedings of Science with the New Generation of High Energy Gamma-ray experiments, 10th Workshop {\textemdash} PoS(Scineghe2014)", year = 2015, volume = "218", pages = "022" }