Add GreinerPetter19b

gipp.bib

@@ -1605,6 +1605,15 @@
   title     = {Introducing MathQA - A Math-Aware Question Answering System},
 }
 
+@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},
+}
+
 @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},