@article{LombardD97,
  title = {At the Heart of It All: The Concept of Presence},
  author = {Matthew Lombard and Theresa Ditton},
  year = {1997},
  url = {http://jcmc.indiana.edu/vol3/issue2/lombard.html},
  researchr = {https://researchr.org/publication/LombardD97},
  cites = {0},
  citedby = {0},
  journal = {J. Computer-Mediated Communication},
  volume = {3},
  number = {2},
}