Zenodo is a repository for immutable versions of software that are provided with a persistent DOI for the purposes of citation and reproducibility.
Underworld can be cited via a zenodo DOI. There is a master DOI for all releases (10.5281/zenodo.1436039) and releases after 2.6.0 are automatically given a DOI under the master. If you are using a development branch and wish to obtain a DOI for your specific version we ask that you contact us to make an interim release under the master DOI.
Underworld is listed under the AuScope community on Zenodo.
Originally published at http://www.underworldcode.org on October 3, 2018.