TALASBAEVA Z, Z. T. On principal numberings of Σ −1 n . Journal of Mathematics, Mechanics and Computer Science, [S. l.], v. 73, n. 2, p. 44–47, 2012. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/136. Acesso em: 22 dec. 2024.