Update README.md

README.md

@@ -84,10 +84,13 @@ If you use **OriOn-Mistrak** or **MMLBD-C** in your work, please cite:
 
 ```bibtex
 @misc{orion_longdoc_vlm_2026,
-  title  = {How to Train Your Long-Context Visual Document Model},
-  author = {Austin Veselka},
-  year   = {2026},
-  note   = {Manuscript in preparation. (No arXiv link yet.)}
+  title={How to Train Your Long-Context Visual Document Model}, 
+  author={Austin Veselka},
+  year={2026},
+  eprint={2602.15257},
+  archivePrefix={arXiv},
+  primaryClass={cs.CV},
+  url={https://arxiv.org/abs/2602.15257}, 
 }
 @misc{mistral31small,
       title={Mistral Small 3.1},