@misc{Paone2026ACounterexampleLine,
  author = {Paone, Andrea},
  title = {A Counterexample to a Line-Graph Inertia Conjecture},
  month = jul,
  year = {2026},
  date = {2026-07-22},
  version = {1.0},
  doi = {10.5281/zenodo.21499790},
  url = {https://doi.org/10.5281/zenodo.21499790},
  note = {Preprint; not peer reviewed}
}