株式譲渡および完全子会社化のお知らせ [Notice regarding share transfer and becoming a wholly owned subsidiary]. epapyrus.jp (in Japanese). 2022-06-03. Retrieved 2024-12-08.
会社名変更のお知らせ [Notice of company name change]. epapyrus.jp (in Japanese). 2023-11-06. Retrieved 2024-12-08.