1. Darnell, W. H. and Mol, E. A. J., “Solids Conveying in Extruders”, SPE J., 12, 20 (1956)
2. Chung, C. I., “New Ideas about Solid Conveying in Screw Extruders”, SPE J., 26(5), 32 (1970)
3. Gruenschloss, E., “Solids Conveying in Single Screw Extruders with Helical Grooves in the Barrel”, SPE-ANTEC Technical Papers, 25, 160 (1979)
4. Chung, C. I., “Maximum Pressure Developed by Solid Conveying Force in Screw Extruders”, Polym. Eng. Sci., 15(1), 29 (1975)
5. Fritz, H.-G., “Verschleisserscheinungen an Plastifiziereinheiten von Hohlkoerperblasanlagen (Wear Phenomena in Plasticating Units of Blow-Molding Machines)”, Kunststoffe, 65, 176 (1975)