Jack Baker, Megan Workman, Edward Bedrick, M. Anderson Frey, Magdalena Hurtado, Osbjorn Pearson,
Brains versus brawn: an empirical test of Barker's brain sparing model. American Journal of Human Biology. ,vol. 22, pp. 206- 215 ,(2009) ,
10.1002/AJHB.20979