1. Sang-Kil Son, “Electronic response to X-ray free-electron laser pulses” in The 3rd CQSE International Workshop on Atomic, Molecular, and Ultrafast Science and Technology (National Taiwan University, Taipei, Taiwan, January 7-8, 2012) [invited talk].
2. Sang-Kil Son, “Electronic response to X-ray free-electron laser pulses” in MPC-AS seminar (Max Planck Center for Attosecond Science, POSTECH, Pohang, Korea, November 23, 2012) [oral presentation].
3. Sang-Kil Son and Robin Santra, “Inner-shell multiphoton multiple ionization dynamics of xenon atoms by x-ray free-electron laser pulses” in DPG Spring Meeting of the Section AMOP (German Physical Society, Hanover, Germany, March 18-22, 2013) [oral presentation].
4. Sang-Kil Son, “What happens to atoms and molecules during x-ray free-electron laser pulses?” in Seminar on Dynamical Aspects of Theoretical Chemistry (Department of Chemistry, Free University of Berlin, Berlin, Germany, November 19, 2015) [invited talk].
5. Sang-Kil Son, “What happens to atoms and molecules during x-ray free-electron laser pulses?” in Physical Colloquium (Institute of Physics, University of Kassel, Kassel, Germany, December 3, 2015) [invited talk].
6. Sang-Kil Son, “Ultrafast ionization and fragmentation dynamics of molecules at high x-ray intensity” in The 47th Meeting of the Division of Atomic, Molecular and Optical Physics (American Physics Society, Providence, Rhode Island, United States, May 23-27, 2016) [invited talk].
7. Sang-Kil Son, “Electronic structure at high x-ray intensity” in The electronic-structure problem in theoretical strong-field physics (ITAMP, Harvard University, Cambridge, Massachusetts, United States, October 10-14, 2016) [invited talk].
8. Sang-Kil Son, “What happens to atoms and molecules during x-ray free-electron laser pulses?” in Physics and Photon Science Colloquium (Department of Physics and Photon Science, GIST, Gwangju, Korea, October 18, 2016) [invited talk].
9. Sang-Kil Son, “Ultrafast ionization and fragmentation dynamics of molecules at high x-ray intensity” in Korean Physical Society Fall Meeting (Korean Physical Society, Gwangju, Korea, October 19-21, 2016) [invited talk].
10. Sang-Kil Son, “What happens to atoms and molecules during X-ray free-electron laser pulses?” in European XFEL Theory Seminar (European XFEL, Schenefeld, Germany, June 22, 2017) [invited talk].
11. Sang-Kil Son, “Electronic structure of atoms and molecules at high x-ray intensity” in New trends in theory for experiments at advanced light sources (European XFEL and CFEL, Schenefeld and Hamburg, Germany, November 29-December 1, 2017) [invited talk].
12. Sang-Kil Son, “Ultrafast ionization and fragmentation dynamics of molecules at high x-ray intensity” in The 7th Topical Conference of the Indian Society of Atomic and Molecular Physics (Indian Society of Atomic and Molecular Physics, Tirupati, India, January 6-8, 2018) [invited talk].
13. Sang-Kil Son, “Ultrafast ionization and fragmentation dynamics of molecules at high x-ray intensity” in Light-Matter Interaction: Recent Advances in Theory (DESY, Hamburg, Germany, January 25, 2018) in Satellite Workshop of European XFEL and DESY Photon Science Users' Meeting 2018 [invited talk].
14. 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].
15. Sang-Kil Son, “Theory of X-ray–matter interactions” in Ultrafast X-ray Summer School (PULSE, Stanford, California, United States, June 15-22, 2020) [lecture].
16. Sang-Kil Son, “Resonances in x-ray multiphoton ionization” in Molecular quantum dynamics beyond bound states (Institute of Physics, Rostock University, Rostock, Germany, March 10-12, 2021) [invited talk].
17. Sang-Kil Son, “Relativistic effects in x-ray multiphoton ionization dynamics” in 13th International Conference on Relativistic Effects in Heavy-Element Chemistry and Physics (Assisi, Italy, September 26-30, 2022) [invited talk].