1. R Hooke, in: Lectures de Potentia Restitution (John Martyn, London, 1678)
2. I S Newton, in: Philosphiae Naturalis Principia Mathematica (Royal Society of London, 1687)
3. H Markovitz, Phys. Today 21, 23 (1968)
4. C W Macosko, in: Rheology – Principles, measurements and applications (Wiley-VCH, New York, 1994)
5. H A Barnes, J F Hutton and K Walters, in: An introduction to rheology (Elsevier, USA, 1989)