1. High precision measurement of aspheric surfaces;Dil;SPIE,1980
2. Aspheric surfaces: design and optical advantages;Braat;Philips Technical Review,1983
3. COLATH, a numerically controlled lathe for very high precision;Gijsbers;Philips Technical Review,1980
4. Optomechanics, an ultra-high-precision machining technique;Haisma;Philips Technical Review,1983
5. Fabrication, testing and application of highly accurate aspheric optical elements;Haisma;Philips Technical Review,1983