@article{constrainedbileveloptimizationproximal,
  title = {Constrained Bi-Level Optimization: Proximal Lagrangian Value function Approach and Hessian-free Algorithm},
  author = {Wei Yao and Chengming Yu and Shangzhi Zeng and Jin Zhang},
  year = {2024},
  eprint = {2401.16164},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2401.16164v1},
}