BÌNH, N. T. Abstract family of sources. Journal of Computer Science and Cybernetics, [S. l.], v. 22, n. 1, p. 1–13, 2012. DOI: 10.15625/1813-9663/22/1/1388. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/1388. Acesso em: 4 may. 2024.