add citation

README.md

@@ -74,9 +74,10 @@ For detailed usage examples, please refer to the [main repository](https://githu
 If you use this model, please cite:
 
 ```bibtex
-@article{kairos2025,
+@article{feng2025kairos,
   title={Kairos: Towards Adaptive and Generalizable Time Series Foundation Models},
-  author={Kun Feng and Shaocheng Lan and Yuchen Fang and Wenchao He and Lintao Ma and Xingyu Lu and Kan Ren},
+  author={Feng, Kun and Lan, Shaocheng and Fang, Yuchen and He, Wenchao and Ma, Lintao and Lu, Xingyu and Ren, Kan},
+  journal={arXiv preprint arXiv:2509.25826},
   year={2025}
 }
 ```