1 - A course of modern analysis - Third edition
Whittaker, Edmund Taylor (1873-1956)   /   Watson, George Neville (1886-1965)

Cote : [40 WHI 1920]

2 - The theory of spherical and ellipsoidal harmonics
Hobson, Ernest William (1856-1933)

Cote : [41.4 HOB 1931]