9th International Harbour Congress, 20-24 june 1988: proceedings
(1988). 9th International Harbour Congress, 20-24 june 1988: proceedings. Royal Flemish Society of Engineers (K VIV): Antwerp. ISBN 90-5204-001-X. Vol.1 (1.1-3.104; 1-78); Vol.2 (4.1-7.16) pp.