Chang, Jui-Chin, and Tsai-Tien Shih. 1989. “Sea Water Intrusion in the Keelung River (Taiwan). A Study of the Tidal Effect”. Geografia Fisica E Dinamica Quaternaria 2 (January): 97-102. https://gfdq.glaciologia.it/index.php/GFDQ/article/view/1142.