1. 1) Fassihi A. R., Int. J. Pharm., 44, 249–256 (1988).
2. 2) Gabaude C. M., Guillot M., Gautier J. C., Saudemon P., Chulia D., J. Pharm. Sci., 88, 725–730 (1999).
3. 3) Hamid S. M., “Thesis of Ph.D. degree.” University of Basel, Switzerland, p 253, 2011.
4. 4) Michrafy A., Ringenbacher D., Tchoreloff P., Powder Technol., 127, 257–266 (2002).
5. 5) Patel S., Kaushal A. M., Bansal A. K., Pharm. Res., 24, 111–124 (2006).