1.		Adapting to the internet: trends in travelers’ use of the web for trip planning / Zheng Xiang [et al.] Resp- Sec.: Zheng, Xiang Dan, Wang O'Leary, Joseph T. Fesenmaier, Daniel R.
2.		Use of the internet for trip planning: a generational analysis / Heejun Kim, Zheng Xiang, Daniel R. Fesenmaier Autor: Heejun, Kim Coautor: ; Zheng, Xiang Fesenmaier, Daniel R.