As of June 2020, HeinOnline indexes Digital Object Identifier (DOI) numbers for articles, when available. DOI numbers are displayed below the Author’s name in search results:
DOI numbers are also searchable via Advanced Search in the Law Journal Library.
For example, if a user is looking for the article Right to Housing: An Utopia for Wastepickers in the City of Fortaleza-Ceara with reference DOI: 10.19092/reed.v7i1.356, they can look it up by choosing “DOI” from the dropdown and entering the DOI in the corresponding field, and then clicking “search”:
The article will be returned as a search result: