Update README.md

README.md

@@ -11,4 +11,16 @@ tags:
 - generation
 size_categories:
 - 100K<n<1M
----
+---
+**BibTeX:**
+```bibtex
+@article{liu2026lmlexiconimprovingdefinitionmodeling,
+      title={LM-Lexicon: Improving Definition Modeling via Harmonizing Semantic Experts}, 
+      author={Yang Liu and Jiaye Yang and Weikang Li and Jiahui Liang and Yang Li and Lingyong Yan},
+      year={2026},
+      eprint={2602.14060},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2602.14060}, 
+}
+```