1. Arruda, E. H., Melatto, R. A. P. B., Levy, W., & Conti, D. M. (2021). Circular economy: A brief literature review (2015–2020). Sustainable Operations and Computers, 2, 79–86. https://doi.org/10.1016/j.susoc.2021.05.001
2. Bianchi, G., Pisiotis, U., & Cabrera Giraldez, M. (2022). GreenComp The European sustainability competence framework. In Y. Punie, & M. Bacigalupo, (Eds.), EUR 30955 EN, Publications Office of the European Union, Luxembourg, JRC128040. https://doi.org/10.2760/821058
3. CESCY (Circular Economy- Sustainable Competencies for Youth) Project. (2022). Youth competencies in the circular economy labour market : A taxonomy of competencies. CESCY Intellectual Output Two. https://circulareconomy.europa.eu/platform/sites/default/files/youth_competencies_in_the_circular_economy_labour_market._a_taxonomy_of_competencies._cescy_io2.pdf
4. Circular EELISA Community (2021). What is Circular EELISA Community?. About CEC. https://blogs.upm.es/circulareelisa/about
5. CYCLE (Circular Economy Competences. Making the Case for Lifelong Learning) Project. (2019). Pedagogical model to include circular economy competences in adult education. CYCLE Project, 2017-2-ES01-KA204-038470. https://ec.europa.eu/programmes/erasmus-plus/project-result-content/280b6a3a-5fa5-4369-8fa1-8d4f1b5fa93d/Result_1._CYCLE_final.pdf