Update README.md

README.md

@@ -43,10 +43,13 @@ We pretrain the model on  100 billion tokens, including:
 Please kindly cite using the following BibTeX:
 
 ```bibtex
-@misc{sparsellm,
-    title={Sparse Large Language Models with ReLU Activation}, 
-    author={SpaseLLM Team},
-    year={2023}
+@misc{zhang2024relu2,
+      title={ReLU$^2$ Wins: Discovering Efficient Activation Functions for Sparse LLMs}, 
+      author={Zhengyan Zhang and Yixin Song and Guanghui Yu and Xu Han and Yankai Lin and Chaojun Xiao and Chenyang Song and Zhiyuan Liu and Zeyu Mi and Maosong Sun},
+      year={2024},
+      eprint={2402.03804},
+      archivePrefix={arXiv},
+      primaryClass={cs.LG}
 }
 ```