"Sacred Leaves of Brazilian Candomble" Geographical Review, Vol. 80 No. 2, April 1990. "The Brazilian Fiber Belt: Harvest and Management of Piassava Palm (Atalea funifera Mart.)" Advances in Economic Botany, 1988. "Fire Management of the Piassava Fiber Palm (Attalea Funifera) in Eastern Brazil" Conference of Latin Americanist Geographers. "Edaphic Limitation of a Brazilian Rainforest Palm: The Role of Energy Allocation and Competition for Sunlight" Physical Geography, 1990. "Changing Sexual Expression of a Brazilian Rain Forest Palm (Attalea funifera Mart.)" Biotrapica, 1988.