Qiao, Feng, Sheng Rongtian, Li Xuewei, Dai Ruiwen, and Jiang Yong. “Age and Geochemical Characteristics of Nansu Rapakivi Granite in Jiaobei Uplift Belt, Qingdao”. Global Journal of Earth Science and Engineering 9 (May 10, 2022): 51–64. Accessed July 13, 2025. https://ijaet-journal.org/index.php/gjese/article/view/1223.