| 2025 | ISIT | A Lower Bound of Worst-Case Redundancy of $k$-Symbol Delay Decodable Codes. | Kengo Hashimoto, Ken-ichi Iwata |
| 2025 | ISIT | Extensions of Asymmetric Binary Systems and Rayleigh's Theorem. | Ken-ichi Iwata, Kengo Hashimoto, Hirosuke Yamamoto |
| 2024 | ISIT | AIFV Codes Allowing 2-bit Decoding Delays for Unequal Bit Cost. | Ken-ichi Iwata, Kengo Hashimoto, Takahiro Wakayama, Hirosuke Yamamoto |
| 2022 | ISITA | Enumeration and Coding of Binary AIFV-m Code Trees. | Genta Onishi, Kengo Hashimoto, Ken-ichi Iwata, Hirosuke Yamamoto |
| 2021 | ISIT | On the Optimality of Binary AIFV Codes with Two Code Trees. | Kengo Hashimoto, Ken-ichi Iwata |
| 2020 | ISIT | A Universal Data Compression Scheme based on the AIVF Coding Techniques. | Hirosuke Yamamoto, Koki Imaeda, Kengo Hashimoto, Ken-ichi Iwata |
| 2019 | ISIT | Enumeration and Coding of Compact Code Trees for Binary AIFV Codes. | Kengo Hashimoto, Ken-ichi Iwata, Hirosuke Yamamoto |
| 2019 | PERCOM | On-Site Personal Sport Skill Improvement Support Using Only a Smartwatch. | Guillaume Lopez, Shohei Abe, Kengo Hashimoto, Anna Yokokubo |