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Published online by Cambridge University Press: 24 October 2008
Dr P. T. Bateman has pointed out that the definition of r(a, a) should be
The rest of the proof is unaffected except that the appropriate change should be made in the proof of Lemma 2. (The proof as it stands is incorrect.)
The formula in the first line of p. 644 should be: G(z) = S(z) + N2z.