Ahnert C. Threshold Concepts in deutschen Bibliotheken - eine Utopie?. o-bib [Internet]. 2017 Apr. 7 [cited 2025 Aug. 11];4(1):26-31. Available from: https://o-bib-ojs3test.ub.uni-muenchen.de/index.php/bib/article/view/2017H1S26-31