11. For categories4 that are determined to be key categories, in accordance with the 2006 IPCC Guidelines, and estimated in accordance with the provisions in paragraph 14 below, 3 In accordance with decision 7/CP.12. 4 The term &quot; categories &quot; refers to both source and sink categories as set out in the 2006 IPCC Guidelines.
11. For categories that are determined to be key categories, in accordance with the 2006 IPCC Guidelines, and estimated in accordance with the provisions in paragraph 14 below, Annex I Parties should make every effort to use a recommended method, in accordance with the corresponding decision trees in the 2006 IPCC Guidelines.