diff --git a/gipp.bib b/gipp.bib
index 10ebe83b77369471395f3a7039fa49ba3d80bf97..76a7ae004559fd2ac59329daef5d1e8f3d9cf71c 100644
--- a/gipp.bib
+++ b/gipp.bib
@@ -1600,6 +1600,7 @@
 
 @article{GreinerPetter2019,
   author       = {Greiner-Petter, Andre and Schubotz, Moritz and Cohl, Howard S. and Gipp, Bela},
+  biburl       = {https://www.emeraldinsight.com/action/showCitFormats?doi=10.1108%2FAJIM-08-2018-0185},
   date         = {2019-07},
   doi          = {10.1108/AJIM-08-2018-0185},
   issn         = {2050-3806},
@@ -1610,7 +1611,6 @@
   preprint     = {https://ag-gipp.github.io/bib/preprints/greinerpetter2019.pdf},
   title        = {Semantic Preserving Bijective Mappings for Expressions involving Special Functions in Computer Algebra Systems and Document Preparation Systems},
   volume       = {71},
-  biburl={https://www.emeraldinsight.com/action/showCitFormats?doi=10.1108%2FAJIM-08-2018-0185},
 }
 
 @inproceedings{Meuschke2019,