Coba jelasin Lihat juga dari Carl Zeiss AG dong

Carl Zeiss Company History, an older article but updated and covering Zeiss history up to about 2000, with interesting content and illustrations

Dierk Hobbie (2010), "The development of photogrammetric instruments and methods at Carl Zeiss in Oberkochen", Deutsche Geodätische Kommission, Reihe E, Nr. 30, Munich, Germany 2010.