Yukker: Focus on an Innovative Social Start-Up. Social Entrepreneurship Review, Poland, v. 1, p. 33–43, 2022. DOI: 10.15678/SER.2022.1.03. Disponível em: https://ser.uek.krakow.pl/index.php/ser/article/view/24034. Acesso em: 31 oct. 2026.