Vented/Fugitive Emissions Studies

[Gildo]

Hi, does anyone know of any studies characterizing GHG (specifically methane) emissions from natural gas systems in Europe?

Right now, I'm using this U.S.

http://www.gastechnology.org/webroot/app/xn/xd.aspx?xd=10AbstractPage\10912.xml

study as a surrogate for Europe.

Thanks!