Saez-Rodriguez, A. (2013) “Knot numbers used as labels for identifying subject matter of a khipu”, Latin American Journal of Ethnomathematics: sociocultural perspective of mathematics education, 6(1), pp. 4-19. Available at: https://www.revista.etnomatematica.org/index.php/RevLatEm/article/view/52 (Accessed: 17May2024).