@article{Hirai2018, author = "Katsuyuki Hirai", title = "{Niigata University and ORCID}", year = "2018", month = "4", url = "https://orcid.figshare.com/articles/presentation/Niigata_University_and_ORCID/6173720", doi = "10.23640/07243.6173720.v1" }