1. Cook, A.M., Polgar, J.M.: Assistive Technologies: Principles and Practice, 3rd edn., Saint Louis, MO Mosby (2007)
2. Moreno, L., Iglesias, A., Calvo, R., Delgado, S., Zaragoza, L.: Higher Education Institutions and Learning Management Systems: Adoption and Standardization. In: Disability Standards and Guidelines for Learning Management Systems: Evaluating Accessibility. IGI Global (2010)
3. Caniëls, M.C.J., Smeets-Verstraeten, A.H.J., van den Bosch, H.M.J.: LMS, LCMS, and e-Learning Environments Where Did the Didactics Go? In: The Challenges of Educating People to Lead in a Challenging World, pp. 401–421. Springer, Netherlands (2007)
4. Holmes, B., Gardner, J.: E-learning: concepts and practice, 1st edn. SAGE, London (2006)
5. Harman, K., Koohang, A.: Learning objects: standards, metadata, repositories & LCMS. Informing Science Press (2006)