Update README with citation info

README.md

@@ -78,7 +78,15 @@ model = BigEarthNetv2_0_ImageClassifier.from_pretrained(
 
 If you use any of these models in your research, please cite the following papers:
 ```bibtex
-CITATION FOR DATASET PAPER
+@article{clasen2024refinedbigearthnet,
+  title={reBEN: Refined BigEarthNet Dataset for Remote Sensing Image Analysis}, 
+  author={Clasen, Kai Norman and Hackel, Leonard and Burgert, Tom and Sumbul, Gencer and Demir, Beg{\"u}m and Markl, Volker},
+  year={2024},
+  eprint={2407.03653},
+  archivePrefix={arXiv},
+  primaryClass={cs.CV},
+  url={https://arxiv.org/abs/2407.03653}, 
+}
 ```
 ```bibtex
 @article{hackel2024configilm,