Elgar, S. (December 1987). "Relationships involving third moments and bispectra of a harmonic process". IEEE Transactions on Acoustics, Speech, and Signal Processing. 35 (12): 1725–1726. doi:10.1109/TASSP.1987.1165090. ISSN0096-3518.
Elgar, S. (December 1987). "Relationships involving third moments and bispectra of a harmonic process". IEEE Transactions on Acoustics, Speech, and Signal Processing. 35 (12): 1725–1726. doi:10.1109/TASSP.1987.1165090. ISSN0096-3518.