@inproceedings{Lazarides:2016MZ, author = "Lazarides, George and Panagiotakopoulos, Costas", title = "{Double Hybrid Inflation and gravitational waves}", doi = "10.22323/1.258.0075", booktitle = "Proceedings of 18th International Conference From the Planck Scale to the Electroweak Scale {\textemdash} PoS(PLANCK 2015)", year = 2016, volume = "258", pages = "075" }