Europe 2020 – The New Strategy For Smart , Susinable And Inclusive Growth And Bulgarian Industrial Competitiveness. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference, [S. l.], v. 1, p. 333–339, 2015. DOI: 10.17770/etr2011vol1.912. Disponível em: https://archive-journals.rtu.lv/etr/article/view/3747.. Acesso em: 11 mar. 2026.