Add bibtex citation info (#2)

- Add bibtex citation info (9b7484e7e7241f8bd2b6d21816e96fd7fe335c9a)


Co-authored-by: Daniel van Strien <davanstrien@users.noreply.huggingface.co>

README.md

@@ -88,7 +88,16 @@ mit
 
 When using the data please cite : 
 
-**authors papers coming soon** 
+```bibtext
+@misc{gucciardi2024symbrain,
+      title={Symbrain: A large-scale dataset of MRI images for neonatal brain symmetry analysis}, 
+      author={Arnaud Gucciardi and Safouane El Ghazouali and Francesca Venturini and Vida Groznik and Umberto Michelucci},
+      year={2024},
+      eprint={2401.11814},
+      archivePrefix={arXiv},
+      primaryClass={cs.CV}
+}
+```
 
 and