@misc{masaki2026a,
  title = {Non-negative matrix factorization analysis of spatially-resolved photoemission spectra for epitaxially grown graphene on SiC},
  author = {Masaki Imamura, Kazutoshi Takahashi},
  publisher = {Taylor & Francis},
  year = {2026-06-19},
  keywords = {Photoemission spectroscopy, non-negative matrix factorization, graphene, machine learning, data-driven analysis}
}