Reference
Astrid Hopfensitz, and Matthijs Van Veelen, “In Love and War: Altruism, Norm Formation, and Two Different Types of Group Selection”, Journal of Theoretical Biology, vol. 249, n. 4, December 2007, pp. 667–680.
See also
Published in
Journal of Theoretical Biology, vol. 249, n. 4, December 2007, pp. 667–680