1. Al-Ghazawi, A., 1994, The preparation and evaluation of extrudates as oral controlled release dosage forms. Ph.D. Thesis, University of London.
2. Study of formulation parameters on the physical-technique characteristics of theophylline granules obtained by extrusion–spheronization;Bataille;Pharm. Acta Helv.,1991
3. Preparation of small solid pharmaceutical spheres;Conine;Drug Cosm. Ind.,1970
4. Bi-component extrusion of ceramic fibers;Curran;Adv. Mater. Proc.,1995
5. Convergent flow analysis in the extrusion of wet powder masses;Harrison;J. Pharm. Pharmacol.,1984