Perrels, P.A.J. <br/><br/>
two-dimensional, laterally averaged model for salt intrusio-n in estuaries / P.A.J. Perrels and M. Karelse. 

 - Delft, [Holanda] : Delft Hydraulics Laboratory 
 - [53] p. 
 - Delft Hydraulics Laboratory ; no. 262 .