Boonleang, Siravit, Chanoknan Changklang, Phatarapol Pakong, and Thunwa Theerakarn. 2024. “Two-Parameter Taxicab Trigonometric Identities: Annual Meeting in Mathematics 2023”. Thai Journal of Mathematics 22 (1):119–135. https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/1604.