How to get good servers
Internet-Zeitabgleich: Guter Server gesucht
pool.ntp.org: NTP Servers in Switzerland
General
Principles of Precision Timestamping
Akadias Publications
Time Synchronization with NTP
TAI Timescale
What is International Atomic Time (TAI)?
TAI64 Timestamps
TAI: Convert a Numeric Time to/from a String Time
GPS, UTC, and TAI Clocks
NTP Architecture and Protocol
Network Time Synchronization Research Project
Wireless
Time Synchronization in Wireless Networks