Wear recording at micro deep drawing tools with comparative digital holographyS. Huferath-von Luepke, P. Huke, C. von Kopylow and R. B. BergmannJ. Eur. Opt. Soc.-Rapid Publ., 7 (2012) 12041DOI: https://doi.org/10.2971/jeos.2012.12041