精选优质文档-倾情为你奉上文献出处：U Gretzel. The business model innovation of online travel in E-commerce environment J. Tourism management, 2015, 31(2): 179-188.原文The business model innovation of online travel in E-commerce environmentU GretzelAbstractOnline travel industry as the combination of tourism and the Internet, have different characteristics with the traditional tourism. In this process, the Internet is always playing an important role in the world. With the progress of the society,
