@article{77b49d2e87f849aea3c34327b3bbce63,
title = "Altruism through beard chromodynamics",
keywords = "Altruism, Cooperative Behavior, Evolution, Game Theory, Hair Color, Humans, Models, Biological, Models, Genetic, Selection, Genetic, Viscosity",
author = "Jansen, {Vincent A A} and {van Baalen}, Minus",
year = "2006",
month = mar,
day = "30",
doi = "10.1038/nature04387",
language = "English",
volume = "440",
pages = "663--6",
journal = "Nature",
issn = "1476-4687",
publisher = "NATURE PUBLISHING GROUP",
number = "7084",
}