KAYIHAN, B.; YELEK, M. S.; KARA, N. Institutional Structure, Union Density and Voluntary Sustainability Commitments: A Panel Data Analysis of European Countries. International Journal of Contemporary Economics and Administrative Sciences, [S. l.], v. 16, n. 1, p. 1108–1133, 2026. DOI: 10.5281/zenodo.20800553. Disponível em: https://www.ijceas.com/ijceas/article/view/1027. Acesso em: 30 jun. 2026.