PIASECKI , Krzysztof. Present Value and Gossen’s First Law - A Case Study. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 3, n. 2, p. s. 169–180, 2015. DOI: 10.18559/s4rmcc51. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3847. Acesso em: 3 sep. 2026.