@article{FrankeKleinschmidtSpringetal.1981,
  author    = {Werner W. Franke and J{\"u}rgen A. Kleinschmidt and Herbert Spring and Georg Krohne and Christine Grund and Michael F. Trendelenburg and Michael St{\"o}hr and Ulrich Scheer},
  title     = {A nucleolar skeleton of protein filaments demonstrated in amplified nucleoli of Xenopus laevis},
  year      = {1981},
}