А. А. Кореновский. “Calculations for One Illustration of the Pythagorean Theorem”. Bulletin of L.N. Gumilyov Eurasian National University. Mathematics, Computer Science, Mechanics Series, vol. 133, no. 4, Dec. 2020, pp. 40-53, https://bulmathmc.enu.kz/index.php/main/article/view/77.