1.		Preparing for the new economy: advertising strategies and change in destination marketing organizations / Ulrike Gretzel, Yu-Lan Yuan, Daniel R. Fesenmaier Autor: Gretzel, Ulrike Coautor: ; Yuan, Yu-Lan Fesenmaier, Daniel R.
2.		Internet technology use by american convention and visitors bureaus / Yu-Lan Yuan, Ulrike Gretzel, Daniel R. Fesenmaier Autor: Yuan, Yu-Lan Coautor: ; Gretzel, Ulrike Fesenmaier, Daniel R.