References
- Patel M. S., Morton F. S. S., Seager H. 9th Pharmaceutical Technology Conference, Veldhoven, 1989
- Patel M. S. 9th Pharmaceutical Technology Conference, Veldhoven, 1989
- Whitworth C. W., Asker A. F. J. Pharm Sci 1974; 63: 1790
- Comprehensive Organic Chemistry, J. F. Stoddart. Pergammon, Oxford 1979; vol.1