1. School of Environment and Sustainability, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
2. Grupo Resinas Brasil, Complexo Florestal Sao Pedro, Guarei, São Paulo, Brazil
3. Departamento de Engenharia, Universidade Federal do Piauí, Bom Jesus, Piauí, Brazil
4. T & R Chemicals, Clint, Texas, USA