Well here are some interesting links and reading:
For a list of documentation and where to obtain them:
http://www.faa.gov/atpubs/NAO/NAOANX.HTM
The Edition 9 of the "North Atlantic MNPS Airspace Operations Manual" is available for download here:
http://www.nat-pco.org/mnpsa.htm
The ICAO NAT Doc 001, "Consolidated Guidance and
Information Material concerning Air Navigation in the North Atlantic Region". is available at:
http://www.nat-pco.org/docs.htm
Now regarding TCAS requirements in RVSM here are two links:
http://www.eur-rvsm.com/faq_pilots.htm#1
http://www.eurocontrol.int/acas/
Now a good search engine is GOOGLE. Try it it works!
http://www.google.com/
Hope you enjoy the reading and that it helps somehow.
Cheers.