add citation

README.md

@@ -78,6 +78,17 @@ To train and deploy the SmartBERT V3 model for Web API services, please refer to
 - [Youwei Huang](https://www.devil.ren)
 - [Sen Fang](https://github.com/TomasAndersonFang)
 
+## Citations
+
+```tex
+@article{huang2025smart,
+  title={Smart Contract Intent Detection with Pre-trained Programming Language Model},
+  author={Huang, Youwei and Li, Jianwen and Fang, Sen and Li, Yao and Yang, Peng and Hu, Bin and Zhang, Tao},
+  journal={arXiv preprint arXiv:2508.20086},
+  year={2025}
+}
+```
+
 ## Sponsors
 
 - [Institute of Intelligent Computing Technology, Suzhou, CAS](http://iict.ac.cn/)