@article{channelestimationforbeyonddiagonal,
  title = {Channel Estimation for Beyond Diagonal Reconfigurable Intelligent Surfaces with Group-Connected Architectures},
  author = {Hongyu Li and Yumeng Zhang and Bruno Clerckx},
  year = {2023},
  eprint = {2307.06129},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2307.06129v3},
}