1. Biotehonomika [Biotechonomy];Blumberga,2016
2. Biotechonomy framework for bioenergy use;Blumberga;Energy Procedia,2015
3. High–value low–volume bioproducts coupled to bioenergies with potential to enhance business development of sustainable biorefineries;Budzianowski;Renew. Sustain. Energy Rev.,2017
4. CSB, 2015. Central Statistical Bureau Database. Gross Domestic Product. Retrieved from: <〈http://data.csb.gov.lv/pxweb/lv/ekfin/ekfin__ikgad__ikp/?Tablelist=true&rxid=cdcb978c-22b0-416a-aacc-aa650d3e2ce0〉 >. (Accessed 7 December 2016).
5. Multicriteria Decision Aid and Artificial Intelligence: Links, Theory and Applications;Doumpos,2013