@article{oai:soar-ir.repo.nii.ac.jp:00020457,
 author = {Ohno, Hiromichi},
 issue = {4},
 journal = {Acta Mathematica Vietnamica},
 month = {Jul},
 note = {This study investigates unitary equivalence classes of translation-invariant two-dimensional two-state quantum walks. We show that unitary equivalence classes of such quantum walks are essentially parameterized by two real parameters., Article, Acta Mathematica Vietnamica.43(4):737-747(2018)},
 pages = {737--747},
 title = {Parameterization of Translation-Invariant Two-Dimensional Two-State Quantum Walks},
 volume = {43},
 year = {2018}
}