The dependence of the [FUV-MUV] colour index on solar cycle Lovric, M. ; Berrilli, F. ; Cagnazzo, C. ; Pietropaolo, E. ; Del Moro, D. ; Giovannelli, L. Abstract Publication: SOLARNET IV: The Physics of the Sun from the Interior to the Outer Atmosphere Pub Date: January 2017 Bibcode: 2017psio.confE.103L