@article{oai:aichiu.repo.nii.ac.jp:00011242,
 author = {神頭, 広好 and KOZU, Hiroyoshi},
 issue = {57},
 journal = {愛知大学経営総合科学研究所叢書},
 month = {Jan},
 note = {9784906971169},
 title = {Space and Order of Four Colors},
 year = {2022}
}