@software{voltpeer_lit_copper_2023_fig3_2026,
  author = {VoltPeer},
  title = {红阶 · 光谱浓度序列},
  year = {2026},
  url = {https://dazi.gsarrizabalaga.xyz/resource-lit-copper-2023-fig3.html},
  version = {1.0.0},
  note = {VoltPeer. Red shades · concentration spectra, v1.0.0. CC-BY-4.0.}
}