Update README.md

README.md

@@ -133,6 +133,16 @@ Math-IF was introduced to study the trade-off between reasoning performance and
 
 
 ```bibtex
+@misc{puerto2026controllablereasoningmodelsprivate,
+      title={Controllable Reasoning Models Are Private Thinkers}, 
+      author={Haritz Puerto and Haonan Li and Xudong Han and Timothy Baldwin and Iryna Gurevych},
+      year={2026},
+      eprint={2602.24210},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2602.24210}, 
+}
+
 @article{fu2025scaling,
   title={Scaling Reasoning, Losing Control: Evaluating Instruction Following in Large Reasoning Models},
   author={Fu, Tingchen and Gu, Jiawei and Li, Yafu and Qu, Xiaoye and Cheng, Yu},