1. and ?Polymer Alloys? paper presented at Canplast, 1981, Montreal, Oct. 25-28, 1981.
2. (Uhe + Gray), Ch. 8, ?Mixing of High Viscosity Materials? (1967).
3. et al. (Bernhardt) ?Processing of Thermoplastic Materials,? Ch. 4 Extrusion, Van Nostrand Reinhold (1959).
4. Isothermal flow of viscous liquids in corotating twin screw devices