1. Mitsubishi Chem. Corp., JP 10045664-A (1996).
2. Toa Gosei Chem. Ind. Ltd., JP 10137585-A (1996).
3. M. Lin, M.W. Linsen, EP0962253-A3 (1999) assigned to Rohm and Haas.
4. M. Takahashi, X. Tu, T. Hirose, M. Ishii, US 5,994,580 (1999) assigned to Toa Gosei.
5. E. Novakova, PhD thesis, University of Liverpool, UK, February 2002.