1. G.L. Long, X.. S. Liu, Theoretical efficient high capacity quantum key distribution scheme. *arXiv preprint quant-ph/0012056* (2000)
2. D. Pan, G.L. Long, L. Yin et al., The evolution of quantum secure direct communication: on the road to the qinternet. *IEEE Communications Surveys & Tutorials* (2024)
3. C.H. Bennett, G. Brassard, S. Breidbart, Quantum cryptography II: how to re-use a one-time pad safely even if P = NP. *Natural Computing, 13* (2014), pp.453–458
4. K. Wen, F.G. Deng, G.L. Long, Reusable Vernam cipher with quantum media. *arXiv e-prints, arXiv: 0711.1632* (2007)
5. H. Zeng, M.-M. Du, W. Zhong, L. Zhou, Y..-B. Sheng, High-capacity device-independent quantum secure direct communication based on hyper-encoding. *Fundamental Research* (2023). https://doi.org/10.1016/j.fmre.2023.11.006