KOSZEL , Maciej. Coopetition - Relational Strategies within Metropolitan Areas. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 2, n. 11, p. 87–102, 2014. DOI: 10.18559/8vjm1b76. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3669. Acesso em: 3 sep. 2026.