1. B. Ben-Belhassen, C. Calpe, A. Abbassian, Food outlook: biannual report on global food markets, in: Food and Agriculture Organization of the United Nations, 2016.
2. Solid-liquid separation of animal slurry in theory and practice. A review;Hjorth;Agron. Sustain. Dev.,2010
3. Phosphorus reclamation through hydrothermal carbonization of animal manures;Heilmann;Environ. Sci. Technol.,2014
4. A pilot scale study on synergistic effects of co-digestion of pig manure and grass silage;Xie;Int. Biodeterior. Biodegrad.,2017
5. OJEC Directive, Council Directive 91/676/EEC of 12 December 1991 concerning the protection of waters against pollution caused by nitrates from agricultural sources, 1991.