Authors: G Sansone; F Kelkensberg; J F Pérez-Torres; F Morales; M F Kling; W Siu; O Ghafur; P Johnsson; M Swoboda; E Benedetti; F Ferrari; F Lépine; J L Sanz-Vicario; S Zherebtsov; I Znakovskaya; A L'huillier; M Yu Ivanov; M Nisoli; F Martín; M J J Vrakking Journal: Nature Date: 2010-06-10 Impact factor: 49.962