@article{TrendelenburgFrankeScheer1977,
  author    = {Michael F. Trendelenburg and Werner W. Franke and Ulrich Scheer},
  title     = {Frequencies of circular units of nucleolar DNA in oocytes of two insects, Acheta domesticus and Dytiscus marginalis, and changes of nucleolar morphology during oogenesis},
  year      = {1977},
}