2001 Book The project began with the book Probability and Finance: It's Only a Game by Shafer and Vovk. 2019 Book A new book on the topic, Game-Theoretic Foundations for Probability and Finance, appeared in May 2019 (Wiley, Hoboken, NJ). Working Papers Subsequent to the publication of the 2001 book, the Rutgers–Royal Holloway research group led by Shafer and Vovk has posted over 50 working papers