1. Statistical Yearbook. Associação Brasileira de Carvão Vegetal, Belo Horizonte, Brasil, 2000.
2. Grassi G, Bridgwater T. (editors). Biomass for energy and environment, agriculture and industry in Europe. Milano: Esagono, 1992.
3. Separation of phenols from Eucalyptus wood tar;Chen;Biomass and Bioenergy,1997
4. Alcatrão de Eucalyptus;Carazza,2000
5. Characterization and thermal polymerization of Eucalyptus tar pitches;Prauchner;Energy Fuels,2001