Abdulhussein, kareem, N. Yasin, و I. Hasan. "Position - Velocity Control for Two PMDC Motors Connected by a Cross-Coupling Technique With Butterflies Optimization Algorithm". مجلة التقني, م 3, عدد 2, يونيو، 2021, ص 31-44, doi:10.51173/jt.v3i2.323.