Authors: Hong Yu; Rajeshwari D Koilkonda; Tsung-Han Chou; Vittorio Porciatti; Sacide S Ozdemir; Vince Chiodo; Sanford L Boye; Shannon E Boye; William W Hauswirth; Alfred S Lewin; John Guy Journal: Proc Natl Acad Sci U S A Date: 2012-04-20 Impact factor: 11.205