2) Uda, T., M. Sumiya, and Y. Kobayashi: Analysis of beach erosion around large-scale coastal structures, Proc. 20th Coastal Eng. Conf., ASCE, pp.2329-2343, 1986.
3) Silvester, R.: Headland defense of coasts, Proc. 15th Coastal Eng. Conf., ASCE, pp.1394-1406, 1976.