1. Lueder, E. Liquid Crystal Displays (John Wiley & Sons, Chichester 2001).
2. Wortman, D. L. The 17th International Display Research Conference, M98-106 (1997).
3. Carlson, L. W., Kotz, A. L., Nevitt, T. J., Ouderkirk, A. J., Stover, C. A., Weber, M. F., Allen, R. C. and Majumdar, B. US Patent Number 5,867,316 (1999).