Article Title,Year,Volume,Issue,Page Range,Author Perceiving interpersonally-mediated risk in virtual environments,2010,14,1,67-76,Portnoy Usability and feasibility of an internet-based virtual pedestrian environment to teach children to cross streets safely,2014,18,1,5-11,Schwebel Using smartphone technology to deliver a virtual pedestrian environment: usability and validation,2017,21,3,145-152,Schwebel