Kátai, I. ., B, K. and B, P. (2023) “ON THE EQUATION F(n² + m² + k) = H(n) + H(m) + K”, Thang Long Journal of Science: Mathematics and Mathematical Sciences, 1(4), pp. 135-151. Available at: https://science.thanglong.edu.vn/index.php/volc/article/view/54 (Accessed: 18May2024).