Potvliege, P.; Leys, E. (1993). Dredging and backfilling for the zeepipe pipelaying project on the Belgian Continental shelf of the North Sea, part I. Terra et Aqua 51: 9-20, meer
Potvliege, P.; Leys, E. (1993). Dredging and backfilling for the zeepipe pipelaying project on the Belgian Continental shelf of the North Sea, part II. Terra et Aqua 52: 3-12, meer
Leys, E.; Plancke, Y.; Ides, S. (2006). Shallow - shallower - shallowest: morphological monitoring Walsoorden, in: Evolutions in hydrography, 6th - 9th November 2006, Provincial House Antwerp, Belgium: Proceedings of the 15th International Congress of the International Federation of Hydrographic Societies. Special Publication (Hydrographic Society), 55: pp. 93-96, meer
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