1. M. Gavrila: Atoms in Intense Laser Fields (Adv. At. Mol. Opt. Phys. Suppl. 1) (Academic, New York 1992)
2. D. Yu, B. Stuart: in Particle Accelerator Conf. (PAC 97), Vancouver, BC, Canada, 12?16 May 1997, pp.?886?888
3. P. Sprangle, A. Ting, E. Esarey, A. Fisher, G. Mourou, R. Sudan: US Patent No. 5 353 291 (1994)
4. T. Mohamed, G. Andler, R. Schuch: Opt. Commun. 214, 291 (2002)
5. J. Hawreliak, D. Chambers, S. Glenzer, R.S. Marjoribanks, M. Notley, P. Pinto, O. Renner, P. Sondhauss, R. Steel, S. Topping, E. Wolfrum, P. Young, J.S. Wark: J. Quantum Spectrosc. Radiat. Transfer 71, 383 (2001)