SONG, Chunyi, and Shigeru SHIMAMOTO. “A Study on Realization of Combined Amplitude and Phase Modulation Employing Elliptical Signals ”. International Journal of Advanced Science and Technology 24 (June 30, 2018): 43 - 68. Accessed May 1, 2026. http://sersc.org/journals/index.php/IJAST/article/view/66.