Cuesta López, Victor Manuel, and Miguel Presno Linera. 2017. “El Reto De La profundización democrática En Europa: Avances Institucionales En Democracia Directa (The Challenge of Democratic Deepening in Europe: The Role of Direct Democracy)”. Oñati Socio-Legal Series 7 (5):895-98. https://opo.iisj.net/index.php/osls/article/view/956.