"Design, Development and Calibration of an Integrated Thin Ring Drawbar Pull Transducer for an Agricultural Tractor" (2022) University of Khartoum Engineering Journal, 2(ENGINEERING). موجود في: https://onlinejournals.uofk.edu/kuej/article/view/1277 (تاريخ الوصول: 9 سبتمبر 2026).