Italian publisher Polimetrica has published a book (link is to downloadable PDF) on open access issues, especially in relation to public policy. It’s worth a read. Appropriately, the book itself has a good licence:

“Polimetrica License B” gives anyone the possibility to distribute the contents of the work, provided that the authors of the work and the publisher are always recognised and mentioned. It does not allow use of the contents of the work for commercial purposes or for profit. Polimetrica Publisher has the exclusive right to publish and sell the contents of the work in paper and electronic format and by any other means of publication. Additional rights on the contents of the work are the author’s property.