9Francis Heylighen & Klaas Chielens, "Cultural Evolution and Memetics", R.A. Meyers, eds., Encyclopedia of Complexity and System Science, New York: Springer, 2009, pp.3205-3220.
10Richard Brodie, Virus of the Mind" The New Science of the Meme, United States: Hay House, 2009, pp.37-38.
