docs: Include arXiv citation

README.md

@@ -4,6 +4,7 @@ pipeline_tag: image-segmentation
 base_model: mouseland/cellpose-sam
 base_model_relation: quantized
 license: bsd-3-clause
+arXiv: 2609.21038
 tags:
 - cellpose
 - cellpose-sam
@@ -45,3 +46,17 @@ Pass `device="cuda"` to `load_model` for CUDA.
 
 `results.json` and `model_registry.json` contain the compact machine-readable
 record.
+
+## Citation
+
+If you use this model or code, please cite our paper:
+
+```bibtex
+@article{cruzromero2026retention,
+  title={Retention-Constrained Post-Training Quantization of Cellpose-SAM for Stem Cell Microscopy},
+  author={Cruz Romero, Sebasti{\'a}n A.},
+  journal={arXiv preprint arXiv:2609.21038},
+  note={Accepted at NeurIPS 2026 LXAI Workshop},
+  year={2026}
+}
+```