@article {Simula.SC.566,
	title = {Mixed Finite Element Methods for Viscoelasticity With Weak Symmetry},
	journal = {Mathematical Models and Methods in Applied Sciences (M3AS)},
	volume = {20},
	number = {6},
	year = {2010},
	pages = {955-985},
	abstract = {Small deformations of a viscoelastic body are considered through the linear Maxwell and Kelvin-Voigt models in the quasi-static equilibrium. A robust mixed finite element method, enforcing the symmetry of the stress tensor weakly, is proposed for these equations on simplicial tessellations in two and three dimensions. A priori error estimates are derived and numerical experiments presented. The approach can be applied to general models for linear viscoelasticity and thus offers a unifed framework.},
	doi = {10.1142/S0218202510004490},
	author = {Marie E. {Rognes} and Winther, Ragnar}
}
