@Article{brix1991-ppc,
  author =          {Brix, G.},
  author =          {Semmler, W.},
  author =          {Port, R.},
  author =          {Schad, L. R.},
  author =          {Layer, G.},
  author =          {Lorenz, W. J.},
  title =           {Pharmacokinetic parameters in CNS Gd-DTPA enhanced MR imaging.},
  journal =         {J Comput Assist Tomogr},
  year =            {1991},
  volume =          {15},
  pages =           {621-628},
  number =          {4},
  institution =     {Institut f?ºr Radiologie und Pathophysiologie, Deutsches Krebsforschungszentrum, Heidelberg, Germany.}}