WhittakerW[\[Nu], \[Mu], z] \[Proportional] (z^\[Nu] HypergeometricPFQ[{1/2 - \[Mu] - \[Nu], 1/2 + \[Mu] - \[Nu]}, {}, -(1/z)])/E^(z/2) /; (Abs[z] -> Infinity)

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2007-05-02