Main Geochemical Issues of Relevance to Gas Production and Underground Storage of Oil and Gas (Sixth Session of the Ad Hoc Group of Experts on the Supply and Use of Gas, 20 January 2005)
Technological Standards and Norms Required for Design and Operation of NGV Filling Stations (Fourth session of the Ad Hoc Group of Experts on the Supply and Use of Gas, 23 January 2003)