diff --git a/gipp.bib b/gipp.bib
index 76a7ae004559fd2ac59329daef5d1e8f3d9cf71c..5ad2414b4cc8c032168ba734f1a414cf691582c3 100644
--- a/gipp.bib
+++ b/gipp.bib
@@ -1621,6 +1621,7 @@
   keywords  = {preprint,SchubotzCV},
   preprint  = {https://www.gipp.com/wp-content/papercite-data/pdf/meuschke2019.pdf},
   title     = {Improving Academic Plagiarism Detection for STEM Documents by Analyzing Mathematical Content and Citations},
+  doi = {10.1109/JCDL.2019.00026},
 }
 
 @inproceedings{Schoenhals2019,