"A numeric Study on the Influence of the Values of the Parameter P in Kronig: Peneny Equation on the Width of the Bands" (2023) Hadhramout University Journal of Natural & Applied Sciences, 15(2). موجود في: https://hu.edu.ye/hu-publications/journals/index.php/hujnas/article/view/128 (تاريخ الوصول: 29 يوليو 2026).