Nicholas Luke Banks, H. T., & Luke, N. S. (2008). Modelling of propagating shear waves in biotissue employing an internal variable approach to dissipation. Communications in Computational Physics, 3(3), 603–640. Banks, H. T., Luke, N. S., & Samuels, J. R., Jr. (2007, July). Viscoelasticity in polymers: Phenomenological to molecular mathematical modeling. NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS, Vol. 23, pp. 817–831. https://doi.org/10.1002/num.20250