The mathematics of geometrical and physical optics : the k-function and its ramifications / Orestes N. Stavroudis. Stavroudis, O. N. (Orestes Nicholas), 1923- Geometrical optics Mathematics. Physical optics Mathematics. 535.32 22 STM Includes bibliographical references and index. Weinheim : Wiley-VCH ; c2006. c2006. 2006 Text xiv, 226 p. : eng