STAYKOV, I. The Development of The Labour Law of the European Union in 2019 – New Sources and New Perspectives for a More Reliable Legal Framework of Labour Relations. Part One: European Labour Authority – Establishment and Legal Characteristic. Yearbook of the Law Department, [S. l.], v. 9, n. 10, p. 198–241, 2020. DOI: 10.33919/yldnbu.20.9.7. Disponível em: https://ojs.nbu.bg/index.php/YLD/article/view/643. Acesso em: 30 sep. 2022.