“Genetic Algorithm Based PID Controller Design for a Precise Tracking of Two-Axis Piezoelectric Micropositioning Stage”, alkej, vol. 8, no. 4, pp. 40–52, Dec. 2012, Accessed: Mar. 29, 2025. [Online]. Available: https://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/146