# Derivation of FFT

Can someone please share a link or source where I can find the derivation of FFT(base-2) from the DFT. I need to put this in latex for my thesis and am finding so many different explanations that I don't know which one to use.

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The exposition at Wikipedia (en.wikipedia.org/wiki/…) seems OK? –  joriki Feb 25 '11 at 15:05