AUTHOR=Mizuho Takato , Okafuji Yuki , Baba Jun , Narumi Takuji TITLE=Multiple-agent promotion in a grocery store: effects of modality and variability of agents on customer memory JOURNAL=Frontiers in Robotics and AI VOLUME=11 YEAR=2024 URL=https://www.frontiersin.org/journals/robotics-and-ai/articles/10.3389/frobt.2024.1397230 DOI=10.3389/frobt.2024.1397230 ISSN=2296-9144