A. S. Bystrova, A. B. Daugavet, A. V. Duka, N. V. Kolesnik, A. V. Nevskiy, and D. B. Tev, “Institutionalization of the political elite: sources of recruitment and career”, Vlast i Elity (Power and Elites), vol. 6, no. 2, pp. 24–66, Oct. 2019.