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Bibcode

The bibcode is a compact identifier used by a number of astronomical data systems to uniquely specify literature references. The Bibliographic Reference Code was originally developed to be used in SIMBAD and the NASA/IPAC Extragalactic Database, but it became a de facto standard and is now used more widely, for example, by the NASA Astrophysics Data System who coined and prefer the term "bibcode". The code has a fixed length of 19 characters and has the form This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video