Hamer, D. G. <br/><br/>
immersion engineering and related hydraulic studies for the- Conwy tunnel (United Kingdom) / D. G. Hamer and R. J. de J-ong. 

 - Delft, Holanda : Delft Hydraulics 
 - 8 p. 
 - Publication; No. 421 / Delft Hydraulics. .
<br/><br/> "Paper presented at the International Congress on Tunnels -and Water, Madrid, Spain, 12-15 June 1988, Rotterdam, Balke-ma, 1988".