"Chatchalita Asavanant,Hiroyuki Umemuro","Personal Space Violation by a Robot: An Application of Expectation Violation Theory in Human-Robot Interaction","The 30th IEEE International Conference on Robot and Human Interactive Communication (RO-MAN 2021)","Proceedings of the 30th IEEE International Conference on Robot and Human Interactive Communication (RO-MAN 2021)",,,,"pp. 1181-1188",2021,Aug.