Isn't a number and a URL enough? Why PIDs matter and technical solutions alone are not sufficientAntonia C. Schrader, Stephanie Hagemann-Wilholt, Andreas Czerniak8 September 2023Cite DOIPersistent Identifier Research Data Management Metadata NFDI PID4NFDI PID Network Germany Open ScienceStephanie Hagemann-WilholtProject team memberStephanie works at the German National Library of Science and Technology (TIB) and is a project team member of PID4NFDI.