Catalano, SantoSantoCatalanoFRASCA, AntonioAntonioFRASCAMARILLI, EttoreEttoreMARILLIMarino, GiuseppeGiuseppeMarinoRodonĂ², MarcelloMarcelloRodonĂ²2018-12-292018-12-292000http://hdl.handle.net/20.500.12386/756StampaenLectures delivered at the Workshop on Stellar Activity and Variability 21-23 January 2000, Canakkale University, Turkey: Chromospheric diagnostic in the optical region. The behaviour of spots and plages in magnetically active starsTechnical report