The mail elements of the economy of knowledge. Economics and region, [S. l.], n. 4(91), p. 35–42, 2023. DOI: 10.26906/EiR.2023.4(91).3192. Disponível em: https://ojs35.nupp.edu.ua/eir/article/view/3192. Acesso em: 23 dec. 2025.