Diffusion of News of the Kennedy Assassination. Greenberg, B. S. Public Opinion Quarterly, 28(2):225--232, 1964.
bibtex   
@article{ greenberg_diffusion_1964,
  title = {Diffusion of {News} of the {Kennedy} {Assassination}},
  volume = {28},
  number = {2},
  journal = {Public Opinion Quarterly},
  author = {Greenberg, Bradley S.},
  year = {1964},
  pages = {225--232}
}

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