13 January 2015 Draft agenda for the 37th GFV informal working group session GFV-37-01	GFV-37-01	2015-01-13
15 January 2015 Gaseous-fueled Vehicles (GFV) informal working group progress report GRPE-70-22	GRPE-70-22	2015-01-15
15 January 2015 Minutes of the 36th GFV informal working group session GFV-36-02	GFV-36-02	2015-01-15
15 January 2015 Status of the discussion new HDDF retrofit regulation GFV-37-02	GFV-37-02	2015-01-15
13 February 2015 Draft agenda for the 38th GFV informal group session, including the HDDF task force GFV-38-01	GFV-38-01	2015-02-13
9 March 2015 Draft agenda for the 39th GFV informal group session, including the HDDF task force GFV-39-01	GFV-39-01	2015-03-09
12 June 2015 GFV informal group status report GRPE-71-28/Rev.1	GRPE-71-28/Rev.1	2015-06-12
11 June 2015 Draft report of the 40th GFV informal group session GFV-40-04	GFV-40-04	2015-06-11
10 June 2015 HDDF informal subgroup status report GFV-41-03	GFV-41-03	2015-06-10
22 October 2015 Draft agenda for the 42nd GFV informal group session GFV-42-01	GFV-42-01	2015-10-22
31 December 2015 Draft agenda for the 43rd GFV informal group session GFV-43-01	GFV-43-01	2015-12-31
30 December 2015 Heavy-duty Dual Fuel Retrofit regulation draft text GFV-43-02	GFV-43-02	2015-12-30