"This paper reflects on the basis and relevance of equitable access to sustainable development (EASD) in the UNFCCC negotiations and on the various perspectives and approaches to achieve fairness in the implementation of the Convention. It neither attempts to compare nor appraise the various approaches to equity, but rather analyses the key arguments presented by each approach. It concludes by presenting a perspective on an equity reference framework on the basis of which fair efforts can be based in the ADP outcome is explored, and considers how such a framework could form part of the 2015 agreement."