1. Adam JC (2009) Improved and more environmentally friendly charcoal production system using a low-cost retort-kiln (eco-charcoal). Renew Energy 34(8):1923–1925. https://doi.org/10.1016/j.renene.2008.12.009
2. Aller MF (2016) Biochar properties: transport, fate, and impact. Crit Rev Environ Sci Technol 46:1183–1296. https://doi.org/10.1080/10643389.2016.1212368
3. ASTM (2016a). Standard test methods for direct moisture content measurement of wood and wood-based materials. American Society For Testing and Materials (ASTM) D4442. Annual Book of ASTM Standards. vol 4.10 (Woods), West Conshohocken
4. ASTM (2016b). Standard methods of testing small clear specimens of timber. American Society For Testing and Materials (ASTM) D-142-84. Annual Book of ASTM Standards. vol 4.10 (Woods), pp. 149–149. West Conshohocken
5. ASTM. (2017). Standard test method for proximate analysis of coal and coke. American Society For Testing and Materials (ASTM) D3173/D3173M-17a Annual Book of ASTM Standards. vol 4.10 (Woods). American Society For Testing and Materials, West Conshohocken