Baum, Peter Laboratory for Attosecond Physics, Max Planck Institute of Quantum Optics, Max Planck Society;
Baum, P., & Zewail, A. H. (2009). 4D attosecond imaging with free electrons: Diffraction methods and potential applications. Chemical Physics, 366(1-3), 2-8. doi:10.1016/j.chemphys.2009.07.013.