@inbook{Saltzer, Jerome and Kaashoek, Frans, M_2009, address={Burlington}, title={Case study : the Internet domain name system}, url={https://contentstore.cla.co.uk/secure/link?id=ea6d0537-e563-e811-80cd-005056af4099}, booktitle={Principles of computer system design : an introduction}, publisher={Morgan Kauffman}, author={Saltzer, Jerome and Kaashoek, Frans, M}, year={2009}, pages={175–184} }