International Conference on Labyrinth and Piano Key Weirs, Pkw 2011, Date: 9 February 2011 through 11 February 2011, Location: Liege, Sponsors: Univ. Liege (ULg), Lab. Hydraul. Constr. (HACH);Ec. Polytech. Fed. Lausanne (EPFL), Lab. Constr. Hydraul. (LCH);Centre d'Ingenierie Hydraulique, Electricite de France (EDF);The International Journal on Hydropower and Dams;Societe Hydrotechnique de France (SHF)