1. Global comparisons of metal finishing sectors: Part 3, estimate of world output
2. Has the surface finishing industry reached a Trillion Dollar value globally?
3. P. Leisner, C. Larson, L. P. Nielsen, S. Müller, W. Hansal, J.C. Puippe and A. Zielonka. Global competitiveness of European surface technology, EAST whitepaper, European Academy of Surface Technology, Schwäbisch Gmünd 15 September 2020, 29 pages (www.east-site.net).
4. M. Kirchner. Prod. Finish. On-line 22 April 2021, 2 pp.
5. M. Kirchner. The robots are coming – will your job be next? Prod. Finish. Online 01 July 2017, 2 pp.