Authors: F Wienholtz; D Beck; K Blaum; Ch Borgmann; M Breitenfeldt; R B Cakirli; S George; F Herfurth; J D Holt; M Kowalska; S Kreim; D Lunney; V Manea; J Menéndez; D Neidherr; M Rosenbusch; L Schweikhard; A Schwenk; J Simonis; J Stanja; R N Wolf; K Zuber Journal: Nature Date: 2013-06-20 Impact factor: 49.962