@Inproceedings{EPTCS315.5,
  author    = {Poto\v{c}ek, V\'aclav},
  year      = {2020},
  title     = {Projection Theorem for Discrete-Time Quantum Walks},
  editor    = {Di Molfetta, Giuseppe  and Kendon, Vivien and Shikano, Yutaka},
  booktitle = {{\rm Proceedings 9th International Conference on}
               Quantum Simulation and Quantum Walks,
               {\rm Marseille, France, 20-24/01/2020}},
  series    = {Electronic Proceedings in Theoretical Computer Science},
  volume    = {315},
  publisher = {Open Publishing Association},
  pages     = {48-58},
  doi       = {10.4204/EPTCS.315.5},
}