0.31 Donald O. Henry Harold J. Hietala Arlene M. Rosen Yuri E. Demidenko Vitaliy I. Usik Teresa L. Armagan, Human Behavioral Organization in the Middle Paleolithic: Were Neanderthals Different?, American Anthropologist, 2004.

{ paleolithic upper stone tools }	0.31
{ university press american pp }	0.13
{ human genetic populations modern }	0.12
{ number data group table }	0.11