Houston, Kelly B., and P. K. Sahoo. “On a Functional Equation Related to the Determinant of Symmetric Two-By-Two Matrices”. Sarajevo Journal of Mathematics 3, no. 1 (June 12, 2024): 61–71. Accessed October 15, 2024. https://sjm.anubih.ba/index.php/sjm/article/view/403.