Article(electronic)#1Effects of an Online Self-Assessment Tool on Teachers' Digital CompetenciesIn: IZA Discussion Paper No. 15863Abbiati, Giovanni; Azzolini, Davide; Balanskat, Anja; Engelhart, Katja; Piazzalunga, Daniela; Rettore, Enrico; Wastiau, PatriciaAbbiati, Giovanni; Azzolini, Davide; Balanskat, Anja; Engelhart, Katja; Piazzalunga, Daniela; Rettore, Enrico; Wastiau, PatriciaOpen Access