The best maintenance technique for this rugged, hardwearing material is to do practically nothing.

He lives at 2-something fifty-something street, and he looks like he's thirty-something.

the falling prices of luxury goods

Here, we present the theory for UDG-FEM forward modeling, its validation using quasianalytical solutions in multi-layer sphere models and an evaluation of the new method in a comparison with a discontinuous Galerkin (DG-FEM) method on hexahedral and on conforming tetrahedral meshes.