@article{Lazarides:2016MZ,
  author = "Lazarides, George  and  Panagiotakopoulos, Costas",
  title = "{Double Hybrid Inflation and gravitational waves}",
  doi = "10.22323/1.258.0075",
  journal = "PoS",
  year = 2016,
  volume = "PLANCK 2015",
  pages = "075"
}