Preface; 1. Introduction; 2. Addition theorems in two dimensions; 3. Addition theorems in three dimensions; 4. Methods based on separation of variables; 5. Integral equation methods I: basic theory; 6. Integral equation methods II: further details; 7. Null-field and T-matrix methods; 8. Approximations; Appendices; Comments on the bibliography; Bibliography; Citation index; Index.