1. Jahnke and Emde,Tables of Functions(B. G. Teubner, Leipzig, 1938), third edition, p. 145.
2. Page 224 of reference 1.
3. Pages 200–203 of reference 1.
4. G. N. Watson,A Treatise on the Theory of Bessel Functions(Macmillan Company, New York, 1944), second edition.