@article{RunggerCrippaTrendelenburgetal.1978,
  author    = {M. Rungger and M. Crippa and M. F. Trendelenburg and Ulrich Scheer and Werner W. Franke},
  title     = {Visualization of rDNA spacer transcription in Xenopus oocytes treated with fluorouridine},
  year      = {1978},
}