Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Fabian Lackner and Iva Březinová and Takeshi Sato and Kenichi L. Ishikawa and Joachim Burgdörfer,High-harmonic spectra from time-dependent two-particle reduced-density-matrix theory,Physical Review A,2469-9926,American Physical Society (APS),2017-03-16,95,3,033414,https://cir.nii.ac.jp/crid/1360002217801216128,https://doi.org/10.1103/physreva.95.033414