Add citation block (FINER-SQL ICDE 2026)

Appends the official BibTeX citation to the model card.

README.md

@@ -15,3 +15,16 @@ Trained from [`griffith-bigdata/Qwen-2.5-Coder-3B-SQL-Writer`](https://huggingfa
 📄 See other models: https://huggingface.co/collections/griffith-bigdata/finer-sql
 
 📄 Github: https://github.com/thanhdath/finer-sql/tree/main
+
+
+## Citation
+
+```bibtex
+@inproceedings{finersql,
+  author       = {Thanh Dat Hoang and Thanh Trung Huynh and Matthias Weidlich and Thanh Tam Nguyen and Tong Chen and Hongzhi Yin and Quoc Viet Hung Nguyen},
+  title        = {Boosting Small Language Models for Text-to-SQL with Fine-Grained Execution Feedback and Cost-Efficient Rewards},
+  booktitle    = {ICDE},
+  publisher    = {IEEE},
+  year         = {2026},
+}
+```