Nazar A. Kotelnitsky, Sergey I. Degtyarev, Alina S. Klepak Initiative of Zemstvo Liberal Opposition in the Chernihiv Governorate to Educate Population in the 1870s. European Journal of Contemporary Education. 2024. 13(2): 462-469. [s.l.] : ЗВО "Університет трансформації майбутнього",2025. Disponível em: https://repository.uft.in.ua/index.php/omp/catalog/book/105. Acesso em: 8 jul. 2026.