"IMPROVEMENT OF MEDICATION DELIVERY TRICOPTER STABILITY USING ACKERMAN METHOD" (2019) FULafia Journal of Science and Technology, 5(2), ص 109–119. موجود في: https://lafiascijournals.org.ng/index.php/fjst/article/view/131 (تاريخ الوصول: 17 مايو 2026).