@article {8,
	title = {Evolution of the army ant syndrome: The origin and long-term evolutionary stasis of a complex of behavioral and reproductive adaptations},
	journal = {PNAS},
	volume = {100},
	year = {2003},
	month = {May 27, 2003},
	pages = {6575{\textendash}6579},
	author = {Sea{\textasciiacute} n G. Brady}
}
@article {6,
	title = {Evaluating alternative hypotheses for the early evolution and diversification of ants},
	journal = {PNAS},
	volume = {103},
	year = {2006},
	month = {28/11/2006},
	pages = {18172{\textendash}18177},
	author = {Sean G. Brady and Ted R. Schultz and Brian L. Fisher and Philip S. Ward}
}
