PLAPPERT, Rainer. Patron-Driven Acquisition (PDA) - ein Modell mit Zukunft?. o-bib. Das offene Bibliotheksjournal / Herausgeber VDB, [S. l.], v. 2, n. 4, p. 85–94, 2015. DOI: 10.5282/o-bib/2015H4S85-94. Disponível em: https://o-bib-ojs3test.ub.uni-muenchen.de/index.php/bib/article/view/2015H4S85-94. Acesso em: 12 aug. 2025.