Vorster, O. “The Use of Parallel Plate Rheology to Determine the Intrinsic Viscosity of Polyethylene Terephthalate”. Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt; 24, no. 4 (September 23, 2005): 134-138. Accessed April 26, 2024. http://www.satnt.ac.za/index.php/satnt/article/view/80.