EXCOM/EX/2013/l.7 - Decision of Extension of Mandates of ECE Subsidiary Bodies ; ECE/ENERGY/WP.3/2013/2 - Report of the Working Party on Gas on its twenty-third session ; ECE/ENERGY/2013/L1 - Specifications for the Application of the United Nations Framework Classification for Fossil Energy and Mineral Reserves and Resources 2009 ( UNFC-2009 ) ; ECE/ENERGY/2013/3 - Report on implementing the United Nations Framework Classification for Fossil Energy and Mineral Reserves and Resources 2009 in UNECE member States ;