HAMMERSTRÖM, Lennart; ZWERENZ, Dirk. Maturity-Model for the Evaluation of Investments into IIoT. European Journal of Economics and Business Studies, [S. l.], v. 8, n. 1, p. 75–96, 2019. DOI: 10.26417/ejes.v5i1.p126-140. Disponível em: https://revistia.com/index.php/ejes/article/view/2785. Acesso em: 30 jan. 2026.