Update README.md

README.md

@@ -196,4 +196,19 @@ Carbon emissions can be estimated using the [Machine Learning Impact calculator]
 
 ## Model Card Contact
 
-[More Information Needed]
+[More Information Needed]
+
+
+### Reference
+
+```bibtex
+@article{buehler2024PRefLexOR,
+      title={PRefLexOR: Preference-based Recursive Language Modeling for Exploratory Optimization of Reasoning and Agentic Thinking}, 
+      author={Markus J. Buehler},
+      year={2024},
+      eprint={2410.12375},
+      archivePrefix={arXiv},
+      primaryClass={cs.AI},
+      url={https://arxiv.org/abs/2410.12375}, 
+}
+```