Atta Ur Rahman, and Fuyang Ke. “A USER-CENTERED TECHNICAL REQUIREMENTS FRAMEWORK FOR RELIABLE BEIDOU-BASED CONSUMER NAVIGATION IN CHINESE MEGA-CITIES”. Spectrum of Engineering Sciences, vol. 4, no. 2, Feb. 2026, pp. 1145-87, https://thesesjournal.com.medicalsciencereview.com/index.php/1/article/view/2678.