1【题名】Nightly@nbc.com: Audience Scope and the Perception of Interactivity in Viewer Mail on the Internet
【作者】Newhagen,J.E., J.W.Cordes, M.R. Levy
【出处】Journal of Communication , 1995, 45(3): 164–175

2【题名】Interactivity Reexamined: A Baseline Analysis of Early Business Web Site
【作者】Ha,L., E.L. James
【出处】Journal of Broadcasting and Electronic Media ,1998,42(4): 457–474.
急用，麻烦各位大侠帮忙找找呀，万分感谢！