DŁUGOSZ , Jan. Hypotheses in Management Science. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 4, n. 1, p. 63–75, 2016. DOI: 10.18559/SOEP.2016.1.5. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3368. Acesso em: 3 sep. 2026.