Phounnaly, phayvanh, B. XAYYATI, and V. ANOLAC. “Knowledge and Understanding of Entrepreneurs’ Tax Filing Service via the TaxRIS System in Xay District Municipality, Oudomxay Province”. Souphanouvong University Journal Multidisciplinary Research and Development, vol. 12, no. Fast Track, July 2026, pp. 241-50, doi:10.69692/SUJMRD12(Fast track)241.