@article{Karam:2020WX,
  author = "Karam, Alexandros  and  Antoniadis, Ignatios  and  Lykkas, Angelos  and  Pappas, Thomas  and  Tamvakis, Kyriakos",
  title = "{Single-field inflation in models with an $R^2$ term}",
  doi = "10.22323/1.376.0073",
  journal = "PoS",
  year = 2020,
  volume = "CORFU2019",
  pages = "073"
}