Hilber, I., A. C. Bastos, S. Loureiro, G. Soja, A. Marsz, G. Cornelissen, and T. D. Bucheli. “The Different Faces of Biochar: Contamination Risk Versus Remediation Tool”. Journal of Environmental Engineering and Landscape Management, vol. 25, no. 2, June 2017, pp. 86-104, doi:10.3846/16486897.2016.1254089.