1. Structure des co�ts des stations d'�puration en Suisse et gestion efficace des eaux us�es;A Baranzini;Swiss Journal of Economics and Statistics,1996
2. Water Supply: Costs and Performance of Water Utilities. Evidence from Switzerland. Paper presented at the 13 th World Water Congress;A Baranzini;International Water Resources Association (IWRA),2008
3. Scale economies, technology and technical change in the water industry: Evidence from the English water only sector;A Bottasso;Regional Science and Urban Economics,2009