Update README.md

README.md

@@ -98,7 +98,11 @@ No personally identifiable information is included. All content is derived from
 Use `large_d1024` when accuracy is critical, and `mini_d64` for efficiency. Researchers should test across both to evaluate robustness.
 
 ## Citation
-
+@article{zhou6022619attention,
+  title={Attention-Guided Product Quantization for Efficient Cross-Modal Retrieval},
+  author={Zhou, Kun and HASSAN, FADRATUL HAFINAZ and Gan, Keng Hoon},
+  journal={Available at SSRN 6022619}
+}
 ### BibTeX
 
 ```bibtex