Locke, M. Support to Operations Department, Grain Marketing Board, Zimbabwe. Area 5: Grain Quality Control. The cause and prevention of stackburn in stored maize. Natural Resources Institute, (1996) 19 pp
de los Santos Espinoza, J.; López Paniagua, J.; González., A. Informe de mercado de la palma camedor (Chamaedorea spp.). Grupo Mesófilo A. C., Oaxaca, Mexico (2005) 26 pp