@article{adriani2026characterizing,
  author = {Adriani, O. and Aiello, S. and Albert, A. and Alhebsi, A.R. and Eckerov{\'a}, E. and Krupa, {\v{L}}. and Mamedov, F. and Petropavlova, M. and Shitov, Y. and {\v{S}}tekl, I. and Be{\v{n}}u{\v{s}}ov{\'a}, Z.},
  title = {Characterizing Candidate Blazar Counterparts of the Ultra-high-energy Event {KM3}-{230213A}},
  journal = {The Astronomical Journal},
  publisher = {American Astronomical Society},
  volume = {172},
  number = {3},
  pages = {139},
  year = {2026},
  doi = {10.3847/1538-3881/ae7a4e},
  issn = {0004-6256}
}