14 January 2011 Proposal for Supplement 18 to Regulation No. 23 (GTB) GRE/2011/9	GRE/2011/9	2011-01-14
14 January 2011 Proposal for the [01] series of amendments to Regulation No. 23 GRE/2011/29	GRE/2011/29	2011-01-14
25 March 2011 Comments to document GRE/2011/29 (OICA) GRE-65-23	GRE-65-23	2011-03-25
30 March 2011 Comments to document GRE/2011/29 (OICA) GRE-65-23/Rev.1	GRE-65-23/Rev.1	2011-03-30
2 August 2011 Proposal for amendments to Regulation No. 23 (OICA) GRE/2011/33	GRE/2011/33	2011-08-02
2 August 2011 Proposal for [01] series of amendments to Regulation 23 GRE/2011/60	GRE/2011/60	2011-08-02
29 September 2011 Proposal for amendments to document GRE/2011/60 (OICA) GRE-66-08	GRE-66-08	2011-09-29
29 September 2011 Proposal for amendments to document GRE/2011/61 (OICA) GRE-66-10	GRE-66-10	2011-09-29
29 December 2011 Proposal for Supplement 18 to Regulation No. 23 WP.29/2012/8	WP.29/2012/8	2011-12-29