Time Protocol: ietf.org/rfc/rfc868

Network Time Protocol: ietf.org/rfc/rfc958

Network Time Synchronization Project: www.eecis.udel.edu/~mills/ntp.html

The Network Time Protocol (NTP) Distribution: www.eecis.udel.edu/~mills/ntp/html/index.html

NTP Public Services Project: ntp.isc.org

Flawed Routers Flood University of Wisconsin Internet Time Server: www.cs.wisc.edu/~plonka/netgear-sntp

“Public servers abuse” thread on comp.protocols.time.ntp: groups.google.com/groups?threadm=3E2DBFF7.F9A51614%40udel.edu

“NTP DNS round robin experiment” thread on comp.protocols.time.ntp: groups-beta.google.com/groups?threadm=pan.2003.01.27.19.55.29.794340%40fortytwo.ch

pool.ntp.org: public ntp time server for everyone: www.pool.ntp.org

Debian GNU/Linux: debian.org

The NetBSD Project: netbsd.org

Gentoo Linux: gentoo.org

pool.ntp.org mailing lists: www.pool.ntp.org/#mail

“abusive clients” on the timekeepers mailing list: https://fortytwo.ch/mailman/pipermail/timekeepers/2005/000923.html