Authors: Christoph P E Zollikofer; Marcia S Ponce de León; Daniel E Lieberman; Franck Guy; David Pilbeam; Andossa Likius; Hassane T Mackaye; Patrick Vignaud; Michel Brunet Journal: Nature Date: 2005-04-07 Impact factor: 49.962
Authors: William H Kimbel; Charles A Lockwood; Carol V Ward; Meave G Leakey; Yoel Rak; Donald C Johanson Journal: J Hum Evol Date: 2006-03-06 Impact factor: 3.895