1. EUREF-IP Real-Time Project http://www.epncb.oma.be/projects/euref_IP/euref_IP.html
2. Distribution Maps of Real-Time GNSS Data
3. ftp/misc/ntrip/maps
4. Networked Transport of RTCM via Internet Protocol (Ntrip), Documentation http://igs.ifag.de/root_ftp/software/NtripDocumentation.zip
5. down.htm