1. Linz, J. J. in Building States and Nations Vol. 2 (eds Eisentadt, S. N. & Rokkan, S.) 32–116 (Sage, Beverly Hills, 1973).
2. Barberà, O. & Barrio, A. in Regionalist Parties in Western Europe (eds Mazzoleni, O. & Mueller, S.) 61–85 (Routledge, New York, 2017).
3. Field, B. N. Why Minority Governments Work: Multilevel Territorial Politics in Spain (Palgrave Macmillan, New York, 2016).
4. Rico, G. & Liñeira, R. South Eur. Soc. Polit. 19, 257–280 (2014).
5. Bartomeus, O. in El Proceso Separatista en Cataluña (eds Forti, S., González i Vilalta, A. & Ucelay-Da Cal, E.) 111–130 (Comares, Granada, 2017).