@article{11567,
  author = {Ludwig Oster},
  title = {Lepton Nonconservation and the Early Universe},
  year = {1969},
  journal = {Physical Review Letters},
  volume = {23},
  pages = {987-988},
  month = {Jan-10-1969},
  issn = {0031-9007},
  doi = {10.1103/PhysRevLett.23.987},
}