@misc{kriebel2026_three_anti_invariant_classes_nonintegrable_four_manifold,
  author = {Alec Kriebel},
  title = {Three anti-invariant classes on a nonintegrable four-manifold},
  year = {2026},
  doi = {10.5281/zenodo.23422055},
  url = {https://doi.org/10.5281/zenodo.23422055},
  note = {Unrefereed preprint, version 1.0}
}