@article{Hajduk:3966,
      author        = "Hajduk, Marcin and van Hoof, Peter and Sniadkowska,
                       Karolina and Krankowski, Andrzej and Błaszkiewicz, Leszek
                       and Dabrowski, Bartosz and Zijlstra, Albert",
      title         = "{Radio Continuum Spectra of Planetary Nebulae}",
      year          = "2018",
}