| GRBP/2019/13 | UN R51: Proposal for Supplement 6 to the 03 series of amendments | |
| GRBP-70-06 | UN R51: Proposal to amend GRE/2019/13 | |
| GRBP-70-08/Rev.1 | UN R51: Proposal for Supplement 7 to the 03 series of amendments | |
| GRBP-70-12 | Status report of the ASEP informal group | |
| GRBP-70-15 | UN R51: Status report of the Task Force on Measurement Uncertainties | |
| GRBP/2019/13 | UN R51: Proposal for Supplement 6 to the 03 series of amendments |