1. Sang-Kil Son, “Non-equilibrium pathways 
to a hot plasma: 
multi-resonance excitation and plasma evolution dynamics” in CFEL-DESY Theory Seminar (CFEL, DESY, Hamburg, Germany, April 30, 2025) [oral presentation].
2. Sang-Kil Son, “Quantum-state-resolved X-ray multiphoton ionization dynamics” in XXXIV International Conference on Photonic, Electronic and Atomic Collisions (Sapporo, Japan, July 29-August 5, 2025) [invited talk].