Kammann, Claudia, Jim Ippolito, Nikolas Hagemann, Nils Borchard, Maria Luz Cayuela, José M. Estavillo, Teresa Fuertes-Mendizabal, Simon Jeffery, Jürgen KERN, Jeff Novak, Daniel Rasse, Sanna Saarnio, Hans-Peter Schmidt, Kurt Spokas, and Nicole Wrage-Mönnig. 2018. “Biochar As a Tool to Reduce the Agricultural Greenhouse-Gas Burden – Knowns, Unknowns and Future Research Needs”. Journal of Environmental Engineering and Landscape Management 25 (2):114-39. https://doi.org/10.3846/16486897.2017.1319375.