Exploring the relation between festivals and host cities on Twitter: a study on the impacts of Lucca Comics & Games. - Yesim Tonga Uriarte; Marinella Petrocchi; Maria Luisa Catoni; Stefano Cresci; Rocco De Nicola; Maurizio Tesconi; Rafael Brundo Uriarte (J. Inf. Technol. Tour., 2020)