1. ACT, W.F.R. 1998. Standards are Established for Heavy Metals in Fertilizers: .
2. Pyrolysis of biomass in the presence of Al-MCM-41 type catalysts;Adam;Fuel,2005
3. Biochar properties from different materials of plant origin;Břendová;Eur. Chem. Bull.,2012
4. Impact of pyrolysis temperature and manure source on physicochemical characteristics of biochar;Cantrell;Bioresour. Technol.,2012
5. CFR Title 40, P. Updated in 2018. Protection of Environment. .