Update README.md

README.md

@@ -29,6 +29,10 @@ ProX models are evaluated over 10 language model benchmarks in zero-shot setting
 
 ### Citation
 ```
-@misc{TBD
+@article{zhou2024programming,
+  title={Programming Every Example: Lifting Pre-training Data Quality like Experts at Scale},
+  author={Zhou, Fan and Wang, Zengzhi and Liu, Qian and Li, Junlong and Liu, Pengfei},
+  journal={arXiv preprint arXiv:2409.17115},
+  year={2024}
 }
 ```