@article{smallvolatilityapproximationandmulti,
  title = {Small Volatility Approximation and Multi-Factor HJM Models},
  author = {V. M. Belyaev},
  year = {2025},
  eprint = {2506.12584},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2506.12584v1},
}