Update README.md

Author: substill

README.md

@@ -106,3 +106,11 @@ Note: our model can have a comparable accuracy with Codex of similar model size.
 ## Reference
 If you want to use the models, you need to cite our following paper:
 
+```
+@inproceedings{CERT,
+  title={{CERT}: Continual Pre-training on Sketches for Library-oriented Code Generation},
+  author={Zan, Daoguang and Chen, Bei and Yang, Dejian and Lin, Zeqi and Kim, Minsu and Guan, Bei and Wang, Yongji and Chen, Weizhu and Lou, Jian-Guang},
+  booktitle={The 2022 International Joint Conference on Artificial Intelligence},
+  year={2022}
+}
+```