@book{citemaster_9728,
  author = "O. Schrape and F. Winkler and E. Graß",
  title = "An All-Digital Phase-Locked Loop with High Resolution for Local On-Chip Clock Synthesis",
  year = 2011,
  publisher = "Springer-Verlag",
  volume = 6448,
  isbn = "9783642177514"
}


@book{citemaster_9725,
  author = "F. Herzel and O. Schrape and F. Winkler",
  title = "An integrated 8-12 GHz fractional-N frequency synthesizer in SiGe BiCMOS for satellite communications",
  year = 2010,
  publisher = "Springer",
  volume = 11
}