1. A. Antoniou , 1993 . Digital Filters, Analysis, Design and Applications . Second edition. McGraw-Hill, New York. 689 pages.
2. H. Baher , 2001 . Analog & Digital Signal Processing . Second edition. Wiley, New York. 474 pages.
3. Texture and reflection in computer generated images
4. E. E. Catmull , 1974 . Ph.D. thesis , Dept. of Computer Science, University of Utah. 119 pages.
5. The aliasing problem in computer-generated shaded images