1. A novel freeze pelletization technique for preparing matrix pellets;Cheboyina;Pharm Technol,2004
2. US Patent 4,056,340;Yalkowsky,1977
3. US Patent 4,829,783;Buchmüller,1989
4. Pellet freezing device and process;Schvester,2001
5. Cryopelletizzation;Knoch,1994