1. Bernal-Euse J 1962. A comparative study of different methods of volume measurement used for timber felled in the Caimital forest state of Barinas Venezuela. Bol. Fac. Cienc. For. Univ. Los Andes No. 1 1962. pp. 14. 3 refs.
2. Brako L Zarucchi J 1993. Catalogue of the flowering plants and gymnosperms of Peru. [Catálogo de las Angiospermas y Gimnospermas del Perú]. St. Louis Missouri US: Missouri Botanical Garden. EE.UU.1 286 p.
3. Carvalho PER 1994. Brazilian forest tree species: silvicultural recommendations potential and use of wood. Especies florestais brasileiras: recomendacaes silviculturais potencialidades e uso da madeira 35 + 639 pp.
4. Chable AC 1967. Reforestation in the Republic of Honduras Central America. Ceiba Tegucigalpa 13(2): 1-56 [2 maps 8 refs.].
5. Echenique Manrique R 1971. Properties of sleepers of Azobe (Lophira alata) of the underground railway of Mexico city. Mex. Bosques 10 (6) (26-8). [Es 3 ref.].