Sequency Theory-Foundation and Applications, Academic Press, Inc., 1977
The Dogma of the Circle
Henning F. Harmuth
Introduction, with sub-sections including 1) The Dogma of the Circle, 2) The Circle and the Circular Functions and Communications, 3)Basic Mathematical Concepts, 4)Time and Space Signals, 5) Optical Images from Acoustic Waves, 6) Electromagnetic Waves with General Time Variation, 7) Concepts of Communications Applied to Physics 8) A Guide to Reading.   17 pages.