1. The role of anaerobic digestion and biogas in the circular economy;Fagerström;IEA Bioenergy Task,2018
2. Biogas Basics,2019
3. Biogas upgrading: current and emerging technologies;Angelidaki,2019
4. Using microalgae in the circular economy to valorise anaerobic digestate: challenges and opportunities;Stiles;Bioresour. Technol.,2018
5. Nutrient Recovery by Biogas Digestate Processing;Drosg,2015