1. Sang-Kil Son, Linda Young, and Robin Santra, “Impact of hollow-atom formation on coherent x-ray scattering at high intensity,” Phys. Rev. A 83, 033402 (2011).
2. Robert Thiele, Sang-Kil Son, Beata Ziaja, and Robin Santra, “Effect of screening by external charges on the atomic orbitals and photoinduced processes within the Hartree-Fock-Slater atom,” Phys. Rev. A 86, 033411 (2012).
3. Jan Malte Slowik, Sang-Kil Son, Gopal Dixit, Zoltan Jurek, and Robin Santra, “Incoherent x-ray scattering in single molecule imaging,” New J. Phys. 16, 073042 (2014).
4. Sang-Kil Son, Otfried Geffert, and Robin Santra, “Compton spectra of atoms at high x-ray intensity,” J. Phys. B: At. Mol. Opt. Phys. 50, 064003 (2017) [special issue: emerging leaders].