Update README.md

README.md

@@ -65,4 +65,15 @@ print(dataset['train'][0])
 
 ## Citing
 
-If you use this dataset, please cite our work (citation to be added).
+If you use this dataset, please cite our work.
+```
+@article{wang2025mathbode,
+  title   = {MathBode: Frequency-Domain Fingerprints of LLM Mathematical Reasoning},
+  author  = {Wang, Charles L.},
+  journal = {arXiv preprint arXiv:2509.23143},
+  year    = {2025},
+  month   = {sep},
+  doi     = {10.48550/arXiv.2509.23143},
+  url     = {https://arxiv.org/abs/2509.23143}
+}
+```