Update README.md

README.md

@@ -133,4 +133,12 @@ If you find our work helpful, feel free to give us a citation.
   journal={arXiv preprint arXiv:2412.06559},
   year={2024}
 }
+@article{prmlessons,
+  title={The Lessons of Developing Process Reward Models in Mathematical Reasoning}, 
+  author={
+    Zhenru Zhang and Chujie Zheng and Yangzhen Wu and Beichen Zhang and Runji Lin and Bowen Yu and Dayiheng Liu and Jingren Zhou and Junyang Lin
+  },
+  journal={arXiv preprint arXiv:2501.07301},
+  year={2025}
+}
 ```