20th International Meetin on Information Display (IMID2020), page. 03_8 - 03_8, 2020-08-25
The 21st International Meeting on Information Display (IMID 2021), page. 11_1077, 2021-08-25
The 21st International Meeting on Information Display (IMID 2021), page. 11_1061, 2021-08-25