John P. Ahrens, Edward T. Fulford;
Wave energy dissipation by reef breakwaters, Proceedings of MTS/IEEE OCEANS'88 Conference,
pp. 1244 - 1249, October 1988.
John P. Ahrens, Martha S. Heimbaugh;
Irregular Wave Overtopping of Seawalls, Proceedings of MTS/IEEE OCEANS'86 Conference,
pp. 96 - 103, September 1986.