1.
Kátai I, B K, B P. ON THE EQUATION F(n² + m² + k) = H(n) + H(m) + K. JSTLU-C [Internet]. 2023 Feb. 28 [cited 2024 Nov. 21];1(4):135-51. Available from: https://science.thanglong.edu.vn/index.php/volc/article/view/54