1. P.M. Sequeira Almeida, S. Williams, Innovative process model of Ti–6Al–4V additive layer manufacturing using cold metal transfer (CMT), in: Proceedings of the Twenty-first Annual International Solid Freeform Fabrication Symposium, University of Texas at Austin, Austin, TX, USA, August 9–11, 2010.
2. R. Baker, Method of Making Decorative Articles, US Patent 1533,300, filed November 12, 1920, patented 14th April, 1925.
3. 3D printing with metals
4. Rapid prototyping of metal parts by three-dimensional welding