diff --git a/gipp.bib b/gipp.bib
index a5cf79878e055af09ebf82f8bb78c02c7d3d00cf..4e4b875bf8cf4e2d7494746d52ac160d0dd322f9 100644
--- a/gipp.bib
+++ b/gipp.bib
@@ -1606,12 +1606,12 @@
 }
 
 @inproceedings{GreinerPetter2019b,
-  author       = {Greiner-Petter, Andr{\'{e}} and Ruas, Terry and Schubotz, Moritz and Aizawa, Akiko and Grosky, William and Gipp, Bela},
-  booktitle    = {Proceedings of the 4rd Joint Workshop on Bibliometric-enhanced Information Retrieval and Natural Language Processing for Digital Libraries {(BIRNDL} 2018) co-located with the 42nd International {ACM} {SIGIR} Conference on Research and Development in Information Retrieval {(SIGIR} 2019), Paris, USA, July 25, 2019.},
-  date         = {2019-07},
-  keywords     = {preprint,SchubotzCV},
-  preprint     = {https://arxiv.org/pdf/1905.08359},
-  title        = {Why Machines Cannot Learn Mathematics, Yet},
+  author    = {Greiner-Petter, Andr{\'{e}} and Ruas, Terry and Schubotz, Moritz and Aizawa, Akiko and Grosky, William and Gipp, Bela},
+  booktitle = {Proceedings of the 4rd Joint Workshop on Bibliometric-enhanced Information Retrieval and Natural Language Processing for Digital Libraries {(BIRNDL} 2018) co-located with the 42nd International {ACM} {SIGIR} Conference on Research and Development in Information Retrieval {(SIGIR} 2019), Paris, USA, July 25, 2019.},
+  date      = {2019-07},
+  keywords  = {preprint,SchubotzCV},
+  preprint  = {https://arxiv.org/pdf/1905.08359},
+  title     = {Why Machines Cannot Learn Mathematics, Yet},
 }
 
 @article{GreinerPetter2019,
@@ -1641,6 +1641,22 @@
   title     = {Improving Academic Plagiarism Detection for STEM Documents by Analyzing Mathematical Content and Citations},
 }
 
+@inproceedings{Scharpf2019,
+  author    = {Scharpf, Philipp and Schubotz, Moritz and Cohl, Howard S. and Gipp, Bela},
+  editor    = {Chandrasekaran, Muthu Kumar and Mayr, Philipp},
+  publisher = {CEUR-WS.org},
+  url       = {http://ceur-ws.org/Vol-2414/paper11.pdf},
+  biburl    = {https://dblp.org/rec/bib/conf/sigir/ScharpfSCG19},
+  booktitle = {Proceedings of the 4th Joint Workshop on Bibliometric-enhanced Information Retrieval and Natural Language Processing for Digital Libraries {(BIRNDL} 2019) co-located with the 42nd International {ACM} {SIGIR} Conference on Research and Development in Information Retrieval {(SIGIR} 2019), Paris, France, July 25, 2019.},
+  date      = {2019},
+  keywords  = {preprint,SchubotzCV},
+  pages     = {108--115},
+  preprint  = {http://ceur-ws.org/Vol-2414/paper11.pdf},
+  series    = {{CEUR} Workshop Proceedings},
+  title     = {Towards Formula Concept Discovery and Recognition},
+  volume    = {2414},
+}
+
 @inproceedings{Schoenhals2019,
   author       = {Schoenhals, Alexander and Hepp, Thomas and Leible, Stephan and Ehret, Philip and Gipp, Bela},
   location     = {USA},
@@ -1689,31 +1705,5 @@
   title     = {Securing the Integrity of Time Series Data in Open Science Projects using Blockchain-based Trusted Timestamping},
 }
 
-@inproceedings{Scharpf2019,
-  author    = {Philipp Scharpf and
-               Moritz Schubotz and
-               Howard S. Cohl and
-               Bela Gipp},
-  editor    = {Muthu Kumar Chandrasekaran and
-               Philipp Mayr},
-  title     = {Towards Formula Concept Discovery and Recognition},
-  booktitle = {Proceedings of the 4th Joint Workshop on Bibliometric-enhanced Information
-               Retrieval and Natural Language Processing for Digital Libraries {(BIRNDL}
-               2019) co-located with the 42nd International {ACM} {SIGIR} Conference
-               on Research and Development in Information Retrieval {(SIGIR} 2019),
-               Paris, France, July 25, 2019.},
-  series    = {{CEUR} Workshop Proceedings},
-  volume    = {2414},
-  pages     = {108--115},
-  publisher = {CEUR-WS.org},
-  year      = {2019},
-  url       = {http://ceur-ws.org/Vol-2414/paper11.pdf},
-  timestamp = {Fri, 30 Aug 2019 13:15:06 +0200},
-  biburl    = {https://dblp.org/rec/bib/conf/sigir/ScharpfSCG19},
-  bibsource = {dblp computer science bibliography, https://dblp.org},
-  keywords  = {preprint,SchubotzCV},
-    preprint     = {http://ceur-ws.org/Vol-2414/paper11.pdf},
-
-}
 @comment{jabref-meta: databaseType:biblatex;
 }