1. "Practical Tilted Mirror Systems," SPIE, Vol. 679, p. 12, 1986. Xb-c`k~_  
l6c%_<P|  
2. "Vector Aberration Theory and the Design of Off-Axis Systems," SPIE, Vol. 554, p. 76, 1985. YB~t|m65  
3. "Aberrations of Optical Systems with Large Tilts and Decentrations," SPIE, Vol. 399, p. 272, 1983.