Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Daichi Kozawa and Shun Fujii and Yuichiro K. Kato,Intrinsic process for upconversion photoluminescence via K -momentum–phonon coupling in carbon nanotubes,Physical Review B,24699950,American Physical Society (APS),2024-10-10,110,15,,https://cir.nii.ac.jp/crid/1050866882757573632,