MIRI, SK; SAHU, N. HSES Knowledge Portal: Invention of Counting System. International Journal of Computer Sciences and Engineering, [S. l.], v. 7, n. 2, p. 769–775, 2019. DOI: 10.26438/ijcse/v7i2.769775. Disponível em: https://ijcse.isroset.org/index.php/j/article/view/4397. Acesso em: 2 feb. 2026.