Update README.md

README.md

@@ -1407,6 +1407,15 @@ GreekMMLU includes 45 subjects, grouped into:
 See the paper for the full taxonomy and educational-level breakdown.
 
 ## Citation
-If you use GreekMMLU in your work, please cite the paper:  https://www.arxiv.org/abs/2602.05150
+If you use GreekMMLU in your work, please cite the paper:  
+@misc{zhang2026greekmmlunativesourcedmultitaskbenchmark,
+      title={GreekMMLU: A Native-Sourced Multitask Benchmark for Evaluating Language Models in Greek}, 
+      author={Yang Zhang and Mersin Konomi and Christos Xypolopoulos and Konstantinos Divriotis and Konstantinos Skianis and Giannis Nikolentzos and Giorgos Stamou and Guokan Shang and Michalis Vazirgiannis},
+      year={2026},
+      eprint={2602.05150},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2602.05150}, 
+}