Ao. Smirnov, ELLIPTIC SOLUTIONS OF THE NONLINEAR SCHRODINGER-EQUATION AND THE MODIFIED KORTEWEG-DE VRIES EQUATION, Sbornik. Mathematics, 82(2), 1995, pp. 461-470
Two Ansatze concerning Krichever curves are considered for solutions e
lliptic in x of the nonlinear Schrodinger equation and the Korteweg-de
Vries equation. An example is given of a new two-gap elliptic solutio
n of the nonlinear Schrodinger equation.