Calossi, Enrico, and Eugenio Pizzimenti. “Party Organizational Change: Formal Distribution of Power Between National and Regional Levels in Italian Political Parties (1991-2012)”. PARTECIPAZIONE E CONFLITTO, vol. 8, no. 1, Mar. 2015, pp. 167-89, doi:10.1285/i20356609v8i1p167.