@incollection{FrankeScheerZentgrafetal.1980,
  author    = {Werner W. Franke and Ulrich Scheer and Hanswalter Zentgraf and Michael F. Trendelenburg and U. M{\"u}ller and G. Krohne and H. Spring},
  title     = {Organization of transcribed and nontranscribed chromatin},
  year      = {1980},
}