Affine Structure from Motion.
Koenderink and van Doorn, Journal of the Optical Society of America, A8:377-385, 1991.
(No electronic copy available. Paper copy may be obtained from the Central Library).
Compendium of Computer Vision A tremendous amount of information, including image processing, camera calibration, geometry, mathematics. If you find something especially useful, let me know, and I'll mirror it locally.