This: https://audioxpress.com/article/frequency-delay-dispersion https://audioxpress.com/article/frequency-delay-dispersion Lists it in references (at the ver

This: https://audioxpress.com/article/frequency-delay-dispersion https://audioxpress.com/article/frequency-delay-dispersion Lists it in references (at the very bottom of the page) as Bill Waslo, “Time, Frequency, Phase, and Delay,” Speaker Builder 7/96.