DOLACIS, J.; TOMSONS, E.; HROLS, J. Fuelwood Comparison with Other Kinds of Fuel. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 67–72, 2006. DOI: 10.17770/etr2003vol1.1982. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/1982.. Acesso em: 2 may. 2024.