1. Jackson WJ, Kuhfuss HF (1976) J Polym Sci 14:2043
2. Schaefgen JR (1978) US Patent 4 118 372
3. McFarlane FE, Nicely VA, Davis TG (1977) in: Pearce and Schaefgen (eds) Contemporary Topics in Polymer Science, vol 2. Plenum NY
4. Jerman RE (1980) MS Thesis. Dept Chem Eng, VPI and SU, Blacksburg
5. Jerman RE, Baird DG (1981) J Rheol 25:275