4Cummings J, Merrill A, BorrelliS. The use of hand-held mobile devices : Their impact and implicationsfor library services [J]. Library Hi Tech, 2010 (1):22 - 40.
5WorldCat. Find in a library on your mobile de-vice [EB/OL]. [ 2011 -11 - 1 ]. http://www.worldcat. org/wcpa/content/mobile/.
