Authors: Zoran Galic; Scott G Kitchen; Amelia Kacena; Aparna Subramanian; Bryan Burke; Ruth Cortado; Jerome A Zack Journal: Proc Natl Acad Sci U S A Date: 2006-07-14 Impact factor: 11.205
Authors: J A Thomson; J Itskovitz-Eldor; S S Shapiro; M A Waknitz; J J Swiergiel; V S Marshall; J M Jones Journal: Science Date: 1998-11-06 Impact factor: 47.728