- Ruiz, Ramón Casillas., Candelario, Yurena Pérez., Fernández, Cristina Ferro. (2023) El Hierro UNESCO Geopark: Geological Heritage, Geoconservation and Geoturism.. Geoconservation Research (Geoconserv. Res.), 6(1), 128-138. https://doi.org/10.30486/gcr.2023.1980922.1123