1. For example, Tanaka K: Paraxial Theory of Mechanically Compensated Zoom Lenses by Means of Gaussian Brackets. Canon Research Report No. 6 Canon Inc. Tokyo 1991
2. Zooming – component loci of mechanically compensated zoom lenses in Optics and Optoelectronics – Theory, Devices and Applications;Tanaka,1998
3. Zooming components loci of typical types of mechanically compensated zoom lenses – A focal converter, basic type and standard type;Tanaka;Optik,2000
4. Paraxial Theory in Lens Design in Terms of Gaussian Brackets;Tanaka,1986
5. “MAPLE 6” is a registered trademark of Waterloo Maple Inc. http://www.maplesoft.com/corporate/index.html