SZUMA, Krzysztof. Designation of the Parties to Bills of Exchange which Provide for the Validity of Promissory Notes. Studia Oeconomica Posnaniensia, Poznan, Polska, v. 3, n. 3, p. s. 107–119, 2015. DOI: 10.18559/zg3q6w40. Disponível em: https://journals.ue.poznan.pl/soep/article/view/3904. Acesso em: 3 sep. 2026.