LEPCALIUC, Anamaria. “05 The Oldest Object That Proves the Existence of a Method of Calculation”. International Journal of Social and Educational Innovation (IJSEIro) 2, no. 1 (November 24, 2014): 37-44. Accessed April 19, 2026. https://www.journals.aseiacademic.org/index.php/ijsei/article/view/30.