| GFV-43-04 | Working draft of the proposed heavy-duty dual fuel retrofit regulation | |
| GFV-43-05 | Review of changes in the working draft heavy-duty dual fuel retrofit regulation | |
| GFV-43-06 | Status the the heavy-duty dual fuel regulation | |
| GFV-43-02 | Heavy-duty Dual Fuel Retrofit regulation draft text | |
| GFV-43-04 | Working draft of the proposed heavy-duty dual fuel retrofit regulation |