Authors: Fei Guo; Ning Li; Frank W Fecher; Nicola Gasparini; Cesar Omar Ramirez Quiroz; Carina Bronnbauer; Yi Hou; Vuk V Radmilović; Velimir R Radmilović; Erdmann Spiecker; Karen Forberich; Christoph J Brabec Journal: Nat Commun Date: 2015-07-16 Impact factor: 14.919