dehate-bert Model Card (#6253)

Added citation and paper links.

model_cards/Hate-speech-CNERG/dehatebert-mono-german/README.md

 This model is used detecting **hatespeech** in **German language**. The mono in the name refers to the monolingual setting, where the model is trained using only English language data. It is finetuned on multilingual bert model.
 The model is trained with different learning rates and the best validation score achieved is 0.649794 for a learning rate of 3e-5. Training code can be found at this [url](https://github.com/punyajoy/DE-LIMIT)
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+
+
+### For more details about our paper
+
+Sai Saketh Aluru, Binny Mathew, Punyajoy Saha and Animesh Mukherjee. "[Deep Learning Models for Multilingual Hate Speech Detection](https://arxiv.org/abs/2004.06465)". Accepted at ECML-PKDD 2020.
+
+***Please cite our paper in any published work that uses any of these resources.***
+
+~~~
+@article{aluru2020deep,
+  title={Deep Learning Models for Multilingual Hate Speech Detection},
+  author={Aluru, Sai Saket and Mathew, Binny and Saha, Punyajoy and Mukherjee, Animesh},
+  journal={arXiv preprint arXiv:2004.06465},
+  year={2020}
+}
+
+~~~