ZADOROZHNA, N. T.; OMELCHENKO, T. H. MODERN APPROACHES AND PRINCIPLES OF PORTAL BUILDING. Information Technologies and Learning Tools, [S. l.], v. 1, n. 1, 2010. DOI: 10.33407/itlt.v1i1.295. Disponível em: https://journal.iitta.gov.ua/index.php/itlt/article/view/295. Acesso em: 16 may. 2022.