@article{74849ccc41e44089a9375ee66b4bb279,
title = "Ionization of Helium in the Attosecond Equivalent Light Pulse of 1 GeV/Nucleon U92+ Projectiles",
author = "R. Moshammer and W. Schmitt and J. Ullrich and H. Kollmus and A. Cassimi and R. D{\"o}rner and O. Jagutzki and R. Mann and Olson, \{R. E.\} and Prinz, \{H. T.\} and H. Schmidt-B{\"o}cking and L. Spielberger",
year = "1997",
doi = "10.1103/PhysRevLett.79.3621",
language = "English",
volume = "79",
pages = "3621--3624",
journal = "Physical review letters",
issn = "0031-9007",
number = "19",
}