AUTHOR=Rexhepi Mahmutaj Lura , Jusufi Nora , Krasniqi Besnik , Mazrekaj Leonita , Krasniqi Tringë TITLE=Barriers to transitioning to circular economy within firms in Western Balkans countries JOURNAL=Frontiers in Sustainability VOLUME=6 YEAR=2025 URL=https://www.frontiersin.org/journals/sustainability/articles/10.3389/frsus.2025.1546110 DOI=10.3389/frsus.2025.1546110 ISSN=2673-4524