ГРАЧЕВА, Юлия Евгеньевна. Folk schools of Dorpar district in the beginning of the reign of Emperor Alexander the First. Вестник Санкт-Петербургского университета. История, [S. l.], v. 66, n. 2, p. 364–376, 2023. DOI: 10.21638/spbu02.2021.203. Disponível em: https://history-journal.spbu.ru/article/view/16477. Acesso em: 3 апр. 2025.