SAYBOUNHEAUNG, T.; SONGVILAY, S.; NAMKHALUCK, I.; VONGBOUNSY, P.; SYKEDPHONE, T.; PHONECHALERN, S. Formulas of Counting to Move the Cups onto the Plates. Souphanouvong University Journal Multidisciplinary Research and Development , [S. l.], v. 7, n. 2, p. 140–151, 2021. Disponível em: http://www.su-journal.com/index.php/su/article/view/129. Acesso em: 17 jan. 2026.