1. Sang-Kil Son and Shih-I Chu, “Multielectron Effects on Strong-field Multiphoton Ionization of Polyatomic Molecules” in Kansas Physical Chemistry Symposium (University of Kansas, Lawrence, Kansas, United States, November 7, 2009) [oral presentation].
2. Sang-Kil Son, “Theoretical study of strong-field multiphoton ionization of polyatomic molecules: a new time-dependent Voronoi-cell finite difference method” in CFEL Seminar (CFEL, DESY, Hamburg, Germany, July 23, 2010) [oral presentation].