High accuracy infrared emissivity between 50 and 1000 ᵒC for solar materials characterizationRaquel Fuente, Telmo Echániz, Iñigo González de Arrieta, Irene Urcelay-Olabarria, Josu M Igartua, Manuel J. Tello and Gabriel A. LópezMATEC Web Conf., 307 (2020) 01043DOI: https://doi.org/10.1051/matecconf/202030701043