1. A. Kutter, “Der Schiefspiegler. Ein Spiegelteleskop für hohe Bilddefinition”, Biberach Fritz Wichardt, 1953
2. Optical properties of the metals Al, Co, Cu, Au, Fe, Pb, Ni, Pd, Pt, Ag, Ti, and W in the infrared and far infrared
3. Design of an all-reflective unobscured optical-power zoom objective
4. Distortion correction of all-reflective unobscured optical-power zoom objective