Authors: Su-Yang Xu; Chang Liu; N Alidoust; M Neupane; D Qian; I Belopolski; J D Denlinger; Y J Wang; H Lin; L A Wray; G Landolt; B Slomski; J H Dil; A Marcinkova; E Morosan; Q Gibson; R Sankar; F C Chou; R J Cava; A Bansil; M Z Hasan Journal: Nat Commun Date: 2012 Impact factor: 14.919