EL-HAMALAWI, A., 2000. A simple and effective element distortion factor. Computers and Structures, 75(5), pp. 507-513.
In this paper, the main methods employed during mesh generation to control element distortion are reviewed and
some shortcomings are outlined. New distortion factors are then introduced, which are both simple to implement,
and along with the aspect ratio, provide a rapid measure of an element's quality. Some meshes demonstrating their
use are finally presented.