Sakul, Chaiwat, and Ittipong Chaisayun. “A simple square-rooting circuits using available commercial devices”. Thailand Electrical Engineering Journal (TEEJ) 4, no. 1 (December 9, 2024): 14–17. accessed April 3, 2025. https://ph04.tci-thaijo.org/index.php/TEE_J/article/view/7698.