Duplicate title to
Wagner, F., Winiwarter, W., Klimont, Z., Amann, M. and Sutton, M.
(2011)
Ammonia Reductions and Costs Implied By the Three Ambition Levels Proposed in the Draft Annex IX to the Gothenburg Protocol.
[[CIAM 5/2011]], Version 1.2. CIAM, IIASA, Laxenburg, Austria