General GNSO Processes & Background:
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WHOIS Review Team Final Report May 2012.pdfEWG Initial Report June 2013.pdf
EWG Status Update Report Nov 2013.pdfEWG PP Survey Summary of Results 14 March 2014
EWG Final Report June 2014 (note in particular Section VII (including specific recommendations related to Privacy & Proxy Services) and Annex H)
Whois Studies (selected reports):
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WHOIS Registrant Identification Study - Project Summary Report June 2013
WHOIS Privacy & Proxy Abuse Study Final Report March 2014