diff --git a/content/publication/schreiber-specifications-2021/index.md b/content/publication/schreiber-specifications-2021/index.md
index 2769b9682..d967712ce 100644
--- a/content/publication/schreiber-specifications-2021/index.md
+++ b/content/publication/schreiber-specifications-2021/index.md
@@ -20,4 +20,7 @@ publication_types:
 publication: '*Journal of Integrative Bioinformatics*'
 doi: 10.1515/jib-2021-0026
 abstract: 'This special issue of the Journal of Integrative Bioinformatics contains updated specifications of COMBINE standards in systems and synthetic biology. The 2021 special issue presents four updates of standards: Synthetic Biology Open Language Visual Version 2.3, Synthetic Biology Open Language Visual Version 3.0, Simulation Experiment Description Markup Language Level 1 Version 4, and OMEX Metadata specification Version 1.2. This document can also be consulted to identify the latest specifications of all COMBINE standards.'
+links:
+- name: URL
+  url: https://doi.org/10.1515/jib-2021-0026
 ---