1. Allsop, N.W.H., 1983. Low-crest breakwaters, studies in random waves. In: Proceedings of Coastal Structures. Specialty Conference on the Design, Construction, Maintenance and Performance of Coastal Structures, Arlington, Virginia, USA.
2. Bakker, P., Klabbers, M., Muttray, M., Van den Berge, A., 2005. Hydraulic performance of Xbloc® armour units. In: Proceedings of the First International Conference on Coastal Zone Management and Engineering in the Middle East, Dubai, 6 pp.
3. Besley, P., 1999. Wave overtopping of seawalls: design and assessment manual. R&D Technical Report, HR Wallingford, No. W178, Wallingford, UK, 37 pp., 5 Tables (also from 〈http://www.environment-agency.gov.uk/commondata/105385/w178.pdf)〉.
4. Breustedt, H., 2006. Hydraulic stability of conventional rubble mound breakwater and breakwater with a core made of geotextile sand containers. Master Thesis, Leichtweiß-Institut für Wasserbau, TU Braunschweig, 88 pp. and Annexes (in German).
5. Burcharth, H.F., Christensen, M., Jensen, T., Frigaard, P., 1998. Influence of core permeability on Accropode armour layer stability. Report Aalborg University.