Could anyone point me to an easily available reference for Wiener's formula used in the following answer ?
fourier transform of radon measure
I tried the most obvious sources without success.
Could anyone point me to an easily available reference for Wiener's formula used in the following answer ? fourier transform of radon measure I tried the most obvious sources without success. 

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It is a formula usually attributed to Parseval: http://en.wikipedia.org/wiki/Parsevals_theorem 


You can find a proof of this in W. F. Eberlein, "A note on FourierStiltjes Transforms", Proceedings of the AMS, Vol 6, No 2, April 1955, pp 310312. I think the result is older than this paper. 

