Here are some wonderful sites that you can visit for more information about ERF:
http://www.rearfacing.co.uk/facts.php
http://www.car-safety.org/rearface.html
http://aappolicy.aappublications.org/cgi/content/full/pediatrics;109/3/550/
http://www.msnbc.msn.com/id/9916868
http://www.carseat.org/Technical/tech_update.htm#rearfacFF
http://www.cpsafety.com/PDFfiles/RearFacingBrochure.pdf
http://www.healthychildren.org/English/safety-prevention/on-the-go/pages/Car-Safety-Seats-Information-for-Families-2010.aspx?nfstatus=401&nftoken=00000000-0000-0000-0000-000000000000&nfstatusdescription=ERROR%3A+No+local+token --- Chart for figuring out what kind of seat your child needs
http://www.car-safety.org/faq.html