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. Julia M. Schäfer, Ludger Inhester, Sang-Kil Son, Reinhold F. Fink, and Robin Santra, “Electron and fluorescence spectra of a water molecule irradiated by an x-ray free-electron laser pulse,” Phys. Rev. A 97, 053415 (2018).
3. Julia M. Schäfer, Ludger Inhester, Sang-Kil Son, Reinhold F. Fink, and Robin Santra, “Electron spectra of a water molecule irradiated by an x-ray free-electron laser pulse” in DPG Spring Meeting of the Section AMOP (German Physical Society, Erlangen, Germany, March 4-9, 2018).
4. Julia M. Schäfer, Ludger Inhester, Sang-Kil Son, Reinhold F. Fink, and Robin Santra, “Electron and fluorescence spectra of a water molecule irradiated by an x-ray free-electron laser pulse” in 21st International Conference on Ultrafast Phenomena (Hamburg, Germany, July 15-20, 2018).
5. Sang-Kil Son, Rebecca Boll, and Robin Santra, “Breakdown of frustrated absorption in x-ray sequential multiphoton ionization,” Phys. Rev. Res. 2, 023053 (2020).
6. Sang-Kil Son, “Breakdown of frustrated absorption in x-ray sequential multiphoton ionization” in CFEL-DESY Theory Seminar (CFEL, DESY, Hamburg, Germany, April 1, 2020) [oral presentation].