Frequency shift induced by multielectron polarization in high-order harmonic generation from polar molecules Authors Kim-Ngan H. Nguyen, Doan-An Trieu, Cam-Tu Le, Van-Hoang Le, and Ngoc-Loan Phan Publication year 2025 Index (WoS/Scopus) WoS Publisher American Physical Society Journal Physical Review A Link https://journals.aps.org/pra/abstract/10.1103/PhysRevA.111.053101