PageHeader : Funkcialaj Ekvacioj, 30 (1987) 81-104 Title : Bethe Ansatz and Functional Equations AuthorInfo : By AuthorInfo : Eugene GUTKIN* AuthorInfo : (Columbia University and University of Southern California, U. S. A.) section : 0. Introduction section : 1. Preliminaries section : 2. The $N=2$ case section : 3. Setting section : 4. Full Beth Ansatz section : 5. Symmetric and antisymmetric Bethe Ansatz section : 6. Examples section : References