Abbas, Yasir Khudhair. “Genetic Algorithm Based PID Controller Design for a Precise Tracking of Two-Axis Piezoelectric Micropositioning Stage”. Al-Khwarizmi Engineering Journal 8, no. 4 (December 31, 2012): 40–52. Accessed December 2, 2025. https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/146.