To explain a new signal processing technique based on Fourier Transform, Bogert et al went on to define a new vocabulary. The new terminology was published in a paper with the title: **The Quefrency Alanysis of Time Series for Echoes: Cepstrum, Pseudo-autocovariance, Cross-Cepstrum, and Saphe Cracking**, B.P. Bogert, M.J.R. Healy, J.W. Tukey, Proc. Symp. Time Series Analysis, M. Rosemblatt, Ed., John Wiley & Sons, 1963, pp. 209-243. Only the term *Cepstrum* has been widely used. The question is: are there another papers with this characteristic (papers where the unusual terminology became widely accepted) ? BTW, [Cepstrum][1] is the result of taking the Inverse Fourier transform (FT) of the logarithm of the spectrum of a signal. There is a complex cepstrum, a real cepstrum, a power cepstrum, and phase cepstrum. The power cepstrum in particular finds applications in the analysis of human speech. [1]: http://en.wikipedia.org/wiki/Cepstrum