Bruce Silver just published a new book “DMN Method and Style: The Practitioner’s Guide to Decision Modeling with Business Rules” available from Amazon. This is the very first book that not only describes the latest version 1.1 of the DMN standard (not even being officially released yet) but also provides methodological recommendations for practical DMN applications. The book refers to many decision models initiated and solved as Challenges at DMCommunity.org. Read more here.
Another book “Real-World Decision Modeling with DMN” will be published in mid-2016.