1. Office of the National Working Committee on Ageing: A report on the prediction of the aging population in China [EB/OL], 09 July 2013.
http://www.china.com.cn/english/news/1134589.Htm
2. Zheng, Z.: Research on social network service platform for the elderly. Comput. Eng. Sci. (5), 34 (2012)
3. Luo, S.: User Experience and Product Innovation Design. Mechanical Industry Press, Beijing (2010)
4. Sayago, S., Blat, J.: An ethnographical study of the accessibility barriers in the everyday interactions of older people with the web. Univ. Access Inf. Soc. 10(4), 359–371 (2011)
5. Siu, K.W.M., Ng, A.W.Y., Chan, C.C.H.: The imagery vividness and preferences of older people: implications for visualization in concept design. Des. J. 14(4), 413–426 (2011)