Gyulai, Attila, and Juliane Stein-Zalai. “Hybrid Regimes and the Grey Zone: New Answers to Fundamental Problems in the Study of Political Regimes”. CROSS-SECTIONS Social Science Journal, vol. 5, no. 2, Nov. 2022, pp. 42-59, https://doi.org/10.18392/METSZ/2016/2/9.