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What is a Digital Object Identifier?

April 26, 2017acg ajg american college of gastroenterology digital identifier object

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What is a Digital Object Identifier?

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This chapter provides a high level overview of the Digital Object Identifier (DOI) for those who have no previous knowledge of it. Those who already have some understanding of the basic issues of identification and of the DOI itself should go straight to Chapter 3.

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A digital object identifier (DOI) is an international, public, “persistent identifier of intellectual property entities” in the form of a combination of numbers and letters. For NPG content the DOI is assigned to an item of editorial content, providing a unique and persistent identifier for that item. The DOI system is administered by the International DOI Foundation, a not-for-profit organization. CrossRef, a not-for-profit organization, makes the DOI a reference linking standard and enables cross-publisher linking. It also maintains the lookup system for DOIs. NPG is a founding, and board, member of CrossRef.