Added ArXiv paper reference

README.md

@@ -134,6 +134,15 @@ print(similarities.shape)
 ### BibTeX
 
 #### Redis Langcache-embed Models
+```bibtex
+@inproceedings{langcache-embed-v1,
+    title = "Advancing Semantic Caching for LLMs with Domain-Specific Embeddings and Synthetic Data",
+    author = "Gill, Cechmanek, Hutcherson, Rajamohan, Agarwal, Gulzar, Singh, Dion",
+    month = "04",
+    year = "2025",
+    url = "https://arxiv.org/abs/2504.02268",
+}
+```
 
 #### Sentence Transformers
 ```bibtex