@article{anoverviewofsignalprocessingtechniques2,
  title = {An Overview of Signal Processing Techniques for RIS/IRS-aided Wireless Systems},
  author = {Cunhua Pan and Gui Zhou and Kangda Zhi and Sheng Hong and Tuo Wu and Yijin Pan and Hong Ren and Marco Di Renzo and A. Lee Swindlehurst and Rui Zhang and Angela Yingjun Zhang},
  year = {2021},
  eprint = {2112.05989},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2112.05989v2},
}