1. Barabási, A.L., Albert, R.: Emergence of scaling in random networks. science 286(5439), 509–512 (1999)
2. Barbieri, F., Ronzano, F., Saggion, H.: What does this emoji mean? a vector space skip-gram model for twitter emojis. In: LREC (2016)
3. Blondel, V.D., Guillaume, J.L., Lambiotte, R., Lefebvre, E.: Fast unfolding of communities in large networks. J. Stat. Mech. Theory Experiment 2008(10), P10008 (2008)
4. Unicode Consortium: Unicode emoji (2017).
http://unicode.org/reports/tr51/index.html
5. Evans, V.: The Emoji Code: The Linguistics Behind Smiley Faces and Scaredy Cats. Picador, USA (2017)