Pagel, M. (2000) The history, rate and pattern of world linguistic evolution. In Chris Knight and James R. Hurford and Michael Studdert-Kennedy, editors, The Evolutionary Emergence of Language: Social Function and the Origins of Linguistic Form . Cambridge: Cambridge University Press.

Pagel, M. (2000) The history, rate and pattern of world linguistic evolution. In Chris Knight and James R. Hurford and Michael Studdert-Kennedy, editors, The Evolutionary Emergence of Language: Social Function and the Origins of Linguistic Form. Cambridge: Cambridge University Press.

Coupe,Hombert, Polygenesis of Linguistic Strategies: A Scenario for the Emergence of Languages, 2005	::
Livingstone, The Evolution of Dialect Diversity, 2002	::	7
Livingstone, Computer Models of the Evolution of Language and Languages, 2003	::
Stauffer,Schulze, Microscopic and Macroscopic Simulation of Competition between Languages, 2005	::	4