Agathangelou, P. Katakis, I. Rori, L. Gunopulos, D. Richards, B., Understanding online political networks: The case of the far-right and far-left in Greece, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), (10539 LNCS), 162-177, 2017, Springer-Verlag,