METZGER-SCHUHÄCKER, H.; HOFBAUER, P. Wirtschaftliche Anwendungen in der Schulmathematik. R&E-SOURCE, [S. l.], v. 1, 2014. Disponível em: https://journal.ph-noe.ac.at/index.php/resource/article/view/137. Acesso em: 3 mai. 2024.