Figuring by mechanical warping

• Bill Kelley's idea of a central pulling force and Toshimi Taki's FEM verfication of it, Alan Adlers flex program

• George Lemaîtres work at the LOOM in France

• The Keck-telescope segments

• Stressed-lap polishing

• Yolo warping harnesses

• Bernhard Schmidts vacuummethod for producing Schmidt corrector plates

• ATMJ : off-axis paraboloïd