@article{PrachtTimmerman2004,
  author    = {M. Pracht and Martin Jan Timmerman},
  title     = {A late Namurian (318 Ma) 40Ar-39Ar age for kaersutite megacrysts from the syn-tectonic Black Ball Head diatreme: implications for the onset of Variscan deformation in SW Ireland},
  series    = {Ein sp{\"a}tes Namurian (318 m.y.) Alter 40Ar/39Ar f{\"u}r kaersutitemegacrysts vom schwarzen Kugelkopfdiatreme: eine Altersgrenze f{\"u}r die Deformation Variscan im S{\"u}dwesten Irland},
  year      = {2004},
}