Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Hermann Adrian and Reininghaus Gerrit,"Beyond the Character Sheet: ""Character Keepers"" as Digital Play Aids in the Contemporary Indie TRPG Community",RPG学研究,2434-9682,Japanese Association for Role-Playing Game Studies,2021-12-20,2,,31-50,https://cir.nii.ac.jp/crid/1390290701852387840,https://doi.org/10.14989/jarps_2_31