Markhgeym, M. V. ., A. E. . Novikova, E. E. . Tonkov, A. N. . Gutorova, and A. M. . Tsaliev. “Protection Indicator in the Constitutions of the European Federations”. International Journal of Criminology and Sociology, vol. 9, Apr. 2022, pp. 2342-6, doi:10.6000/1929-4409.2020.09.282.