@article{Timmerman2004,
  author    = {Timmerman, Martin Jan},
  title     = {Timing, geodynamic setting and character of Permo-Carboniferous magmatism in the foreland of the Variscan Orogen, NW Europe},
  isbn      = {1-86239-152-1},
  year      = {2004},
  language  = {en}
}
@article{HeeremansTimmermanKirsteinetal.2004,
  author    = {Heeremans, Michel and Timmerman, Martin Jan and Kirstein, Linda A. and Faleide, J. I.},
  title     = {The late carboniferous : early permian evolution of the central North Sea},
  year      = {2004},
  language  = {en}
}
@book{WilsonNeumannDaviesetal.2004,
  author    = {Wilson, M. and Neumann, Else Ragnhild and Davies, G. R. and Timmerman, Martin Jan and Heeremans, Michel and Larsen, Bjoern Tore},
  title     = {Permo-carboniferous magmatism and rifting in Europe},
  series = {Geological Society special publication},
  volume    = {223},
  journal   = {Geological Society special publication},
  publisher = {Geological Society},
  address   = {London},
  isbn      = {1-86239-152-1},
  pages     = {498 S.},
  year      = {2004},
  language  = {en}
}
@article{vonSeckendorffTimmermanKrameretal.2004,
  author    = {von Seckendorff, V. and Timmerman, Martin Jan and Kramer, W. and Wrobel, P.},
  title     = {New 40Ar/39Ar ages and geochemistry of late Carboniferous to early Permian lamprophyres and related volcanic rocks in the Saxothuringian Zone of the Variscan Orogen (Germany)},
  year      = {2004},
  language  = {en}
}
@article{PrachtTimmerman2004,
  author    = {Pracht, M. and Timmerman, Martin Jan},
  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},
  issn      = {0790-1763},
  year      = {2004},
  language  = {en}
}