---
title: 'DOI'
field: 'is.identifier.doi'
slug: 'is-identifier-doi'
description: 'Digital object identifier - usually for articles and books/chapters'
comment: 'Data element used by Evidensia'
required: False
module: 'Form'
cluster: 'Global'
policy: 'Url. Repeat values.'
layout: 'home'
---