Development of digital system in the field of procurement (on the example of Perm territory). Economic Environment, [S. l.], v. 11, n. 3, p. 13–22, 2022. DOI: 10.36683/2306-1758/2022-3-41/13-22. Disponível em: https://econenv.owebs.ru/article/view/3733. Acesso em: 28 sep. 2026.