@article{oai:tsukuba.repo.nii.ac.jp:00041102,
 author = {小林, 佑輔 and Kobayashi, Yusuke and Toyooka, Sho},
 issue = {4},
 journal = {Algorithmica},
 month = {Apr},
 pages = {1128--1142},
 title = {Finding a Shortest Non-zero Path in Group-Labeled Graphs via Permanent Computation},
 volume = {77},
 year = {2017}
}