1. 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).
  2. Robert Thiele, Sang-Kil Son, Beata Ziaja-Motyka, and Robin Santra, “Effect of screening by external charges on the atomic orbitals and photoinduced processes within the Hartree-Fock-Slater approach” in 33rd International Workshop on Physics of High Energy Density in Matter (Hirschegg, Austria, January 13-18, 2013).
  3. Beata Ziaja, Zoltan Jurek, Nikita Medvedev, Sang-Kil Son, Robert Thiele, and Sven Toleikis, “Photoelectron spectroscopy method to reveal ionization potential lowering in nanoplasmas,” J. Phys. B: At. Mol. Opt. Phys. 46, 164009 (2013) [special issue on frontiers of free-electron laser science].
  4. Beata Ziaja, Zoltan Jurek, Nikita Medvedev, Sang-Kil Son, Robert Thiele, and Robin Santra, “Transitions in matter triggered by intense ultrashort X-ray pulses” in 55th Annual Meeting of the APS Division of Plasma Physics (American Physical Society, Denver, Colorado, November 11-15, 2013).
  5. Sang-Kil Son, Robert Thiele, Zoltan Jurek, Beata Ziaja, and Robin Santra, “Quantum-mechanical calculation of ionization-potential lowering in dense plasmas” in European XFEL and DESY Photon Science Users' Meeting (DESY, Hamburg, Germany, January 29-31, 2014) [poster].
  6. Sang-Kil Son, Robert Thiele, Zoltan Jurek, Beata Ziaja, and Robin Santra, “Quantum-mechanical calculation of ionization potential lowering in dense plasmas,” Phys. Rev. X 4, 031004 (2014).
  7. Sang-Kil Son, Robert Thiele, Zoltan Jurek, Beata Ziaja, and Robin Santra, “Quantum-mechanical calculation of ionization potential lowering in dense plasmas” in Radiative Properties of Hot Dense Matter (Vienna, Austria, September 29-October 3, 2014) [oral presentation].
  8. Sang-Kil Son, “A two-step model for studying ionization potential depression in dense plasmas” in Average Atom Models for Warm Dense Matter (University of California, Berkeley, Berkeley, California, United States, June 28-29, 2021) [invited talk].