{"id":256,"title":"Data is identified by a persistent identifier (Essential)","url":"http://doi.org/10.15497/rda00050#RDA-F1-01D","description":"","image":"","tags":"","type":"yesnobut","license":"Creative Commons Attribution 4.0 International (CC BY 4.0)","rationale":"","principle":"F","fairmetrics":"F1","authors":[1]}