@article{oai:ynu.repo.nii.ac.jp:00008719,
 author = {Higuchi, Yusuke and Konno, Norio and Sato, Iwao and Segawa, Etsuo},
 journal = {Yokohama Mathematical Journal},
 month = {},
 pages = {33--55},
 title = {Quantum graph walks I: Mapping to quantum walks},
 volume = {59},
 year = {2013}
}