STOENCHEV, N. .; HRISCHEVA, Y. . Prospects for development of “smart cities” in Bulgaria. Smart Cities and Regional Development (SCRD) Journal, [S. l.], v. 5, n. 1, p. 17–25, 2021. Disponível em: http://scrd.eu/index.php/scrd/article/view/92. Acesso em: 16 sep. 2021.