Update README.md

README.md

@@ -16,7 +16,7 @@ Check [OR-Agent](https://arxiv.org/abs/2602.13769)[2] and its [repository](https
 
 How to cite:
 
-> Liu, Q., Hao, R., Li, C. and Ma, W., 2026. OR-Agent: Bridging Evolutionary Search and Structured Research for Automated Algorithm Discovery. arXiv preprint arXiv:2602.13769. Available at: https://arxiv.org/abs/2602.13769 (Accessed: 4 April 2026).
+> Liu, Q., Hao, R., Li, C. and Ma, W., 2026. OR-Agent: Bridging Evolutionary Search and Structured Research for Automated Algorithm Discovery. arXiv preprint arXiv:2602.13769.
 
 
 ## Table of Contents