1. Sang-Kil Son and Robin Santra, “Monte Carlo calculation of ion, electron, and photon spectra of xenon atoms in x-ray free-electron laser pulses,” Phys. Rev. A 85, 063415 (2012).
2. Laura Budewig, Sang-Kil Son, and Robin Santra, “State-resolved ionization dynamics of neon atom induced by x-ray free-electron-laser pulses,” Phys. Rev. A 107, 013102 (2023).