1. The electronic book;Gardiner,2010
2. E-Book. Available at: http://en.wikipedia.org/wiki/E-book Accessed October 6, 2012.
3. Digital textbooks reaching the tipping point in U.S. higher education: A revised five-year forecast. Available at http://blog.xplana.com/reports/. Accessed May 6, 2012.
4. Why, where and how? ebook publication for the academic radiologist;Richardson;ACER News,2012
5. Cool technology for academic medicine (with shameless emphasis on radiology);Richardson,2011