Nelson, Gerald C.; Palazzo, Amanda; Mason-D’Croz, Daniel; Robertson, Richard and Thomas, Timothy S. 2013 Methodology. In Southern African Agriculture and Climate Change: A comprehensive analysis. Chapter 2 Pp. 25-40. Washington, D.C.: International Food Policy Research Institute (IFPRI). http://ebrary.ifpri.org/cdm/ref/collection/p15738coll2/id/127794