Ethno-mathematic Exploration of Historic Site Buildings Medan State Museum. Riemann: Research of Mathematics and Mathematics Education, [S. l.], v. 6, n. 3, p. 256–263, 2024. DOI: 10.38114/vrre6r51. Disponível em: https://journal.sanagustin.ac.id/index.php/reimann/article/view/33.. Acesso em: 12 may. 2026.