1. Juan J. Carrera, Sang-Kil Son, and Shih-I Chu, “Ab initio theoretical investigation of the frequency comb structure and coherence in the vuv-xuv regimes via high-order harmonic generation,” Phys. Rev. A 77, 031401(R) (2008).
2. Sang-Kil Son and Shih-I Chu, “Many-mode Floquet theoretical approach for coherent control of multiphoton dynamics driven by intense frequency-comb laser fields,” Phys. Rev. A 77, 063406 (2008).
3. Sang-Kil Son, Siyuan Han, and Shih-I Chu, “Floquet formulation for the investigation of multiphoton quantum interference in a superconducting qubit driven by a strong ac field,” Phys. Rev. A 79, 032301 (2009).
4. Sang-Kil Son and Shih-I Chu, “Multielectron effects on the orientation dependence and photoelectron angular distribution of multiphoton ionization of CO₂ in strong laser fields,” Phys. Rev. A 80, 011403(R) (2009).
5. Sang-Kil Son, Dmitry A. Telnov, and Shih-I Chu, “Probing the origin of elliptical high-order harmonic generation from aligned molecules in linearly polarized laser fields,” Phys. Rev. A 82, 043829 (2010).
6. Yoshiaki Kumagai, Zoltan Jurek, Weiqing Xu, Hironobu Fukuzawa, Koji Motomura, Denys Iablonskyi, Kiyonobu Nagaya, Shin-ichi Wada, Subhendu Mondal, Tetsuya Tachibana, Yuta Ito, Tsukasa Sakai, Kenji Matsunami, Toshiyuki Nishiyama, Takayuki Umemoto, Christophe Nicolas, Catalin Miron, Tadashi Togashi, Kanade Ogawa, Shigeki Owada, Kensuke Tono, Makina Yabashi, Sang-Kil Son, Beata Ziaja, Robin Santra, and Kiyoshi Ueda, “Real-time observation of disintegration processes within argon clusters ionized by a hard-x-ray pulse of moderate fluence,” Phys. Rev. A 101, 023412 (2020).