@article{hybridbeamformingforrisempoweredmulti,
  title = {Hybrid Beamforming for RIS-Empowered Multi-hop Terahertz Communications: A DRL-based Method},
  author = {Chongwen Huang and Zhaohui Yang and George C. Alexandropoulos and Kai Xiong and Li Wei and Chau Yuen and Zhaoyang Zhang},
  year = {2020},
  eprint = {2009.09380},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2009.09380v1},
}