Update README.md

README.md

@@ -29,9 +29,8 @@ PULSAR (Patient Understanding Leveraging Single-cell universAl Representation) i
 
 <!-- Provide the basic links for the model. -->
 
-- **Repository:**: https://github.com/snap-stanford/PULSAR
-- **Paper:** [TBD]
-- **Demo:** [TBD]
+- **Repository:** https://github.com/snap-stanford/PULSAR
+- **Paper:** https://www.biorxiv.org/content/10.1101/2025.11.24.685470v1
 - **Aligned version:** https://huggingface.co/KuanP/PULSAR-pbmc
 
 ## Uses
@@ -67,14 +66,20 @@ Stage-2 continual pretraining (blood focus): 8.736M cells, 2,588 blood/PBMC samp
 
 More details can be found in the Paper and GitHub.
 
-## Citation [optional]
+## Citation
 
 <!-- If there is a paper or blog post introducing the model, the APA and Bibtex information for that should go in this section. -->
 
 **BibTeX:**
 
-[More Information Needed]
+```
+@article{pang2025pulsar,
+  title={PULSAR: a Foundation Model for Multi-scale and Multicellular Biology},
+  author={Pang, Kuan and Rosen, Yanay and Kedzierska, Kasia and He, Ziyuan and Rajagopal, Abhe and Gustafson, Claire E and Huynh, Grace and Leskovec, Jure},
+  journal={bioRxiv},
+  pages={2025--11},
+  year={2025},
+  publisher={Cold Spring Harbor Laboratory}
+}
+```
 
-**APA:**
-
-[More Information Needed]