NÁTHER, Peter; MARKOŠOVÁ, Mária. Positional Word Web and Its Numerical and Analytical Studies. Computing and Informatics, [S. l.], v. 30, n. 6, p. 1287–1302, 2012. Disponível em: https://www.cai.sk/ojs/index.php/cai/article/view/816. Acesso em: 13 jun. 2025.