Update README.md

README.md

@@ -81,4 +81,14 @@ Apache-2.0
 
 If you use **Prost40M**, cite:
 
-- _citation to be added soon_
+```
+@misc{grisi2026bcr,
+      title={Deep Learning From Routine Histology Improves Risk Stratification for Biochemical Recurrence in Prostate Cancer}, 
+      author={Clément Grisi and Khrystyna Faryna and Nefise Uysal and Vittorio Agosti and Enrico Munari and Solène-Florence Kammerer-Jacquet and Paulo Guilherme de Oliveira Salles and Yuri Tolkach and Reinhard Büttner and Sofiya Semko and Maksym Pikul and Axel Heidenreich and Jeroen van der Laak and Geert Litjens},
+      year={2026},
+      eprint={2603.14187},
+      archivePrefix={arXiv},
+      primaryClass={cs.CV},
+      url={https://arxiv.org/abs/2603.14187}, 
+}
+```