@misc{Paone2026LineGraphSignature,
  author = {Paone, Andrea and Paone, Marco},
  title = {Line-Graph Signature Beyond the 2-Core: Exact Counterexamples, Rooted Response, and Extremal Constructions at Fixed Cyclomatic Number},
  month = jul,
  year = {2026},
  date = {2026-07-30},
  version = {1.3},
  doi = {10.5281/zenodo.21706797},
  url = {https://doi.org/10.5281/zenodo.21706797},
  note = {Preprint; not peer reviewed}
}