詳細は，以下を参照して下さい．オープンアクセスなので，どなたでもご覧になれます．
Tran, N.; Kajimura, S.; Shibuya, Y. Location- and Physical-Activity-Based Application for Japanese Vocabulary Acquisition for Non-Japanese Speakers. Multimodal Technol. Interact. 2023, 7, 29. https://doi.org/10.3390/mti7030029