A course of modern analysis : an introduction to the general theory of infinite processes and of analytic functions, with an account of the principal transcendental functions
by E. T. Whittaker and G. N. Watson
1st AMS ed
New York
AMS Press
1979
608 p. ; 24 cm
Reprint of the 1944 American ed. published by The University Press, Cambridge, Macmillan, New York