Kutlu, O., i G. Kocar. „Biochar from Residual Biomass in Turkey, and Possibility of Return to the Soil: An Estimation of the Supply and Demand”. Polish Journal of Agronomy, t. 30, nr 30, sierpień 2022, s. 10-24, doi:10.26114/pja.iung.303.2017.30.02.