@inproceedings{Peñil:2021BU, author = "Peñil, Pablo and Ajello, Marco and Buson, Sara and Dominguez, Alberto and Larsson, Stefan", title = "{Building a robust sample of Fermi-LAT blazars that exhibit periodic gamma-ray emission}", doi = "10.22323/1.395.0636", booktitle = "Proceedings of 37th International Cosmic Ray Conference {\textemdash} PoS(ICRC2021)", year = 2021, volume = "395", pages = "636" }