[3] Cotana F., Petrozzi A., Cavalaglio G., Coccia V., Pisello A. L., Bonamente E. A batch digester plant for biogas production and energy enhancement of organic residues from collective activities. Energy Procedia 2014:61:1669-1672. doi:10.1016/j.egypro.2014.12.18810.1016/j.egypro.2014.12.188
[5] Dzene I., Barisa A., Rosa M., Dobraja K. A conceptual methodology for waste-to-biomethane implementation in an urban environment, International Scientific Conference of Environmental and Climate Technologies - CONECT 2015, 14-16th October, Riga, Latvia.
[6] Latvian Environment, Geology and Meteorology Centre (LVGMC), 2014. Statistics on Waste Generation „3- Atrkitumi” [Online]. Available: http://parissrv.lvgmc.lv/#viewType=wasteatvkproducer&incrementCounter=4
[7] North Vidzeme Waste Management Company (ZAAO), 2013. North Vidzeme Regional Waste Management Development Plan 2014-2020 [Online]. Available: http://www.zaao.lv/upload/File/ZV%20RAAP_01042013_projekts.pdf
[8] Arina D. Characteristics of Mechanically Sorted Municipal Wastes and Their Suitability for Production of Refuse Derived Fuel. Environmental and Climate Technologies 2012:8:18-23.10.2478/v10145-012-0003-0
[10] Latvian Environment, Geology and Meteorology Centre (LVGMC), 2014a. Statistics on Water Use „2-Ūdens” [Online]. Available: http://parissrv.lvgmc.lv/#viewType=sludgeproductiontercoarse&incrementCounter=2
[12] Directive 2008/98/EC of the European Parliament and of the Council of 19 November 2008 on waste and repealing certain Directives. Official Journal of the European Union 2008:L312:3-30.
[13] Directive 2009/28/EC of the European Parliament and of the Council of 23 April 2009 on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC. Official Journal of the European Union 2009:L140:16-62.
[14] Decision No 406/2009/EC of the European Parliament and of the Council of 23 April 2009 on the effort of Member States to reduce their greenhouse gas emissions to meet the Community’s greenhouse gas emission reduction commitments up to 2020. Official Journal of the European Union 2009:L140:136-148.
[15] Barisa A., Rosa M. Modelling transition policy to a sustainable regional transport system: A case study of the Baltic States. Management of Environmental Quality 2015:26:357-372. doi:10.1108/MEQ-08-2014-012210.1108/MEQ-08-2014-0122