1. Al Seadi T, Owen N, Hellström H, Kang H (2013) Source separation of MSW. IEA Bioenergy, UK
2. Appels L, Lauwers J, Degrève J, Helsen L, Lievens B, Willems K, Van Impe J, Dewil R (2011) Anaerobic digestion in global bio-energy production: potential and research challenges. Renew Sust Energ Rev 15:4295–4301
3. AQSIQ, Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China (2014) Quarantine access procedures for agricultural products to be imported to China for the first time. http://www.aqsiq.gov.cn/xxgk_13386/ywxx/dzwjy /201406/t20140626_416136.htm Accessed 20 August 2014
4. BCEP, Biofuel Cities European Partnership (2014) Biofuel cities reports and recommendations—survey 2007: needs assessment. European Commission
5. IEA Bioenergy (2014) Task 37: Biogas in the Society. 100 % biogas for urban transport in Linköping, Sweden: biogas in buses, cars and trains. Sweden