1. Attitude Study for Elderly Care in Japan (in Japanese);. http://www.orixliving.jp/company/pdf/pressinfo_141104.pdf.
2. Special Public Opinion Poll on Nursing-Care Robot (in Japanese);. http://survey.gov-online.go.jp/tokubetu/h25/h25-kaigo.pdf.
3. U.S. Views of Technology and the Future;. http://www.pewinternet.org/2014/04/17/us-views-of-technology-and-the-future/.
4. Public Attitudes Towards Robots;. http://ec.europa.eu/public_opinion/archives/ebs/ebs_382_en.pdf.
5. Use of social commitment robots in the care of elderly people with dementia: A literature review;E Mordoch;Maturitas,2013