To see the WG documents that have been drafted or published to date, click + on the menu on the left hand side and a drop-down menu will appear.
Google Documents:
New gTLD - 2007 Principles and Recommendations — See: https://docs.google.com/document/d/15_0TRWzFIaLgO3QlfYH_0ZtOlMKm7SEjsHif4Oi2iZM/edit?usp=sharing.
Subject 1 Should there in fact be additional new gTLDs in the future - Pros and Cons — See: https://docs.google.com/document/d/111-IBO9zKMXPorvBxoot8uTdLPyjPesYCha6D0slKoM/edit?usp=sharing.