Free interactions, hierarchical structure: Factors explaining replies attraction in online discussions. - Itai Himelboim; Stephen McCreery (First Monday, 2012)

Birds of a Feather Tweet Together: Integrating Network and Content Analyses to Examine Cross-Ideology Exposure on Twitter. - Itai Himelboim; Stephen McCreery; Marc A. Smith (J. Comput. Mediat. Commun., 2013)