5Frohberg,D.,Gth,C.&Schwabe,G.(2009).Mobile Learning Projects:A Critical Analysis of the State of the Art[J].Journal of Computer Assisted Learning,(4):307-331.
6Hwang,G.J.&Tsai,C.C.(2011).Research Trends in Mobile and Ubiquitous Learning:A Review of Publications in Selected Journals from 2001 to 2010[J].British Journal of Educational Technology,(d):65-70.
7Keskin,N.O.&Metcalf, D.(2011).The Current Perspectives, Theories and Practices of Mobile Learning[J].The Turkish Online Journal of Educational Technology,(2):202-208.
8Park,Y.(2011).A Pedagogical Framework for Mobile Learning:Categorizing Educational Applications of Mobile Technologies into Four Types[J].International Review of Research in Open and Distance Learning, (12):78-102.
9Wong, L.H.&I.ooi,C.-K.(2011).What Seams Do We Remove in Mobile-Assisted Seamless Leaming?A Critical Review of the Literature[J].Computers&Education,(4):2364-2381.