Saybounheaung, T., Songvilay, S., Namkhaluck, I., Vongbounsy, P., Sykedphone, T. and Phonechalern, S. (2021) “Formulas of Counting to Move the Cups onto the Plates”, Souphanouvong University Journal Multidisciplinary Research and Development , 7(2), pp. 140–151. Available at: http://www.su-journal.com/index.php/su/article/view/129 (Accessed: 17 January 2026).