1. Sang-Kil Son and Shih-I Chu, “A new 3D grid method for accurate electronic structure calculation of polyatomic molecules: The Voronoi-cell finite difference method” in The 39th Meeting of the Division of Atomic, Molecular and Optical Physics (American Physics Society, State College, Pennsylvania, May 27-31, 2008) [poster].
2. Sang-Kil Son and Shih-I Chu, “Multiple orbital contribution in multiphoton ionization of H₂O in intense ultrafast laser fields” in International Conference on Attosecond Physics (Manhattan, Kansas, July 28-August 1, 2009) [poster].