Vries, W. A. de. <br/><br/>
Nautical risk analysis in port and fairway desing / W. A. d-e Vries. 

 - Delft, Holanda : Delft Hydraulics 
 - 13 p. 
 - Publication; No. 443 / Delft Hydraulics. .
<br/><br/> "Presented at MARSIM & ICSM 90, Tokyo, Japan, June 4-7, 199-0".