1. The theory of spherical and ellipsoidal harmonics;Hobson,1931
2. Elliptic Cylinder and Spheroidal Wave Functions;Stratton,1941
3. Mathieusche Funktionen und Sphaeroidfunktionen;Meixner,1954
4. Spheroidal Wavefunctions;Flammer,1957
5. Diffraction of electromagnetic fields on two bodies;Ivanov,1968