Simple 3D - Scanners, Digitizers and Software
    www.simple3d.com

NAFEMS International FEA Engineering Association

     www.nafems.org

The Worldwide Guide to Rapid Prototyping and Freeform Fabrication
    www.additive3d.com/

Wohlers Associates - Consulting on rapid product development and additive manufacturing
    www.WohlersAssociates.com