Koinotning kengayishi haqida Fridman nazariyasi va uning xozirgi zamonda dolzarbligi. Modern education and development, [S. l.], v. 6, n. 1, p. 182–187, 2024. Disponível em: https://modernedu-dv.com/dv/article/view/127.. Acesso em: 23 dec. 2024.