Dolacis, J., E. Tomsons, and J. Hrols. “Fuelwood Comparison With Other Kinds of Fuel”. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 26, 2006): 67–72. Accessed December 22, 2024. https://journals.ru.lv/index.php/ETR/article/view/1982.