1. Professor, MEK, Coastal, Maritime and Structural Engineering Section, Technical Univ. of Denmark, Building 403, 2800 Lyngby, Denmark.
2. Coastal Engineer, Marine and Foundation Engineering, COWI A/S, Parallelvej 2, DK-2800 Lyngby, Denmark; formerly, MEK, Coastal, Maritime and Structural Engineering Section, Technical Univ. of Denmark, Building 403, 2800 Lyngby, Denmark.