ШИНКАРЕНКО, Л. І. Stages of development of distance education in Ukraine. Pedagogy of Higher and Secondary Education, Kryvyi Rih, Ukraine, v. 34, p. 405–409, 2012. DOI: 10.31812/educdim.v34i0.3630. Disponível em: https://journal.kdpu.edu.ua/ped/article/view/3630. Acesso em: 23 nov. 2024.