1. Council of EU Presidency
Full research: Can Bulgaria help overcome the stalemate in the European Neighbourhood Policy? An Agenda for the Bulgaria Council of EU Presidency.
2. What is Hidden Behind EU’s Development Policy?
3. The Circular Economy as a System
4. Comparative Regional Integration
From (Samokhvalov & Kalpakchiev, 2017)

5. Concentric Integration Cycles

6. Essential Sustainability Reader
- Blockchain for sustainable development
- Energy system transformation
- Using digital fabrication tools to provide humanitarian and development aid in low-resource settings
- Seafood in Europe — A food system approach for sustainability
- Transforming governance in telecoupled food systems
7. Liquid Participation Concept
8. Trans-spatial governance of peripheral innovation
9. Tri-Circularity Concept
10. Trade-Sustainability Nexus in the European Union
11. Circular Esturiary Hydrogen
12. EU Global Engagement and Strategic Policy
13. EU Economic Governance: Fiscal Coordination
14. Towards a Comprehensive Approach for the Migration Crisis (Natolin Think-Tank Group, 2015)
15. Ah-hoc think-tank Experiment №1: Clusterization, Greening and Twnning of Regional Eco-Social Innovations (the-enpi.org, 2020)