@incollection{Ito11,
author = {Yutaka Hiroi and Akinori Ito},
title = {Influence of the Size Factor of a Mobile Robot Moving Toward a Human on Subjective Acceptable Distance},
booktitle = {Mobile Robots},
publisher = {IntechOpen},
address = {Rijeka},
year = {2011},
editor = {Zoran Gacovski},
chapter = {9},
doi = {10.5772/26512},
url = {https://doi.org/10.5772/26512}
}