Jia-Wen Wang, Retrieving critical design factor of ebook for older people in Taiwan, Telematics and Informatics, 2018, , ISSN 0736-5853, https://doi.org/10.1016/j.tele.2018.07.005. (http://www.sciencedirect.com/science/article/pii/S0736585318300340) Keywords: Elderly; eBook; Multiple criteria decision-making (MCDM) method; User interface