Muangkarn, Patchara, Jakkraphan Janthasopha, and Cholatis Suanoom. “The Solutions of Diophantine Equation \frac{1^4}{v_1^4}+\frac{2^4}{v_2^4}+\frac{3^4}{v_3^4}+. +\frac{k^4}{v_k^4}=1”. Research on Modern science and Utilizing Technological Innovation Journal (RMUTI Journal) 17, no. 1 (April 30, 2024): 85–94. accessed August 28, 2026. https://ph01.tci-thaijo.org/index.php/rmutijo/article/view/256061.