Functions in one space of four-dimensional numbers. Journal of Mathematics Mechanics and Computer Science, [S. l.], v. 110, n. 2, p. 139–154, 2021. DOI: 10.26577/JMMCS.2021.v110.i2.12. Disponível em: https://bm.kaznu.kz/index.php/kaznu/article/view/940. Acesso em: 5 jul. 2026.