# AUX file import - use multiple libraries

**URL:** https://discourse.jabref.org/t/aux-file-import-use-multiple-libraries/1515
**Category:** Features
**Created:** [February 12, 2019, 10:13am UTC](https://discourse.jabref.org/t/aux-file-import-use-multiple-libraries/1515 "2019-02-12T10:13:23Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![CsatiZoltan](https://yyz2.discourse-cdn.com/flex030/user_avatar/discourse.jabref.org/csatizoltan/32/813_2.png) [@CsatiZoltan](https://discourse.jabref.org/u/CsatiZoltan)
#### Post date: [February 12, 2019, 10:13am UTC](https://discourse.jabref.org/t/aux-file-import-use-multiple-libraries/1515/1 "2019-02-12T10:13:23Z")

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In _Tools_ -\> _New sublibrary based on AUX file…_ accepts only one reference library. However, I use multiple bib files for a project, therefore it would be useful to accept multiple reference libraries. Specifically, I put the references into several bib files (logically where they belong to) and use some of them when writing a paper. However, the publisher needs a single bib file with no “unnecessary” entries. Currently, I have to do the procedure with Jabref for each library and then manually copying the contents of the “reduced” libraries to a single bib file.