Attributes / relations provided by
♦ ¹Wood Janka Hardness Scale/Chart J W Morlan's Unique Wood Gifts
♦ ²Tropical Fruit-Eating Birds and Their Food Plants: A Survey of a Costa Rican Lower Montane Forest, Nathaniel T. Wheelwright, William A. Haber, K. Greg Murray, Carlos Guindon, Biotropica Vol. 16, No. 3 (Sep., 1984), pp. 173-192
♦ ³Frugivorous Birds, Habitat Preference and Seed Dispersal in a Fragmented Costa Rican Montane Oak Forest Landscape, J.J.A.M. Wilms and M. Kappelle, Ecological Studies Vol 185, pp. 309-324
♦ ⁴Diet and Habitat Preference of the Resplendent Quetzal (Pharomachrus mocinno costaricensis) in Costa Rican Montane Oak Forest, M. García-Rojas, Ecological Studies, 2006, Volume 185, Part V, 325-336
♦ ⁵A seven-year study of individual variation in fruit production in tropical bird-dispersed tree species in the family Lauraceae, NATHANIEL T. WHEELWRIGHT, "Frugivores and seed dispersal", (1986), pp. 19-35