@inproceedings{Savina:2019HN, author = "Savina, Pierpaolo and Bleve, Carla and Perrone, Lorenzo", title = "{Searching for UHE photons in the EeV range: a two-variable approach exploiting air-shower universality.}", doi = "10.22323/1.358.0414", booktitle = "Proceedings of 36th International Cosmic Ray Conference {\textemdash} PoS(ICRC2019)", year = 2019, volume = "358", pages = "414" }