http://blog.threepress.org/2009/02/21/a-case-study-in-converting-image-based-ebooks-into-xml/
(A review by Threepress Consulting, Digital Tools for 21st Century Publishing, February 2009)
“There’s a great deal of valuable information in this recently-released white paper by The American Council of Learned Societies…. Although the study was based on scholarly books, their findings would apply to many other digitization projects.”