Erschienen in: CORKUM, Paul, ed. and others. Ultrafast phenomena XVI : proceedings of the 16th international conference, Palazzo dei Congressi Stresa, Italy, June 9 - 13, 2008. Berlin: Springer, 2009, pp. 675-677. ISSN 0172-6218. eISSN 2364-9003. ISBN 978-3-540-95945-8. Available under: doi: 10.1007/978-3-540-95946-5_219
