%0 Journal Article %A Vladimir P. Burskii %A Alexei S. Zhedanov %T Dirichlet and Neumann Problems for String Equation, Poncelet Problem and Pell–Abel Equation %J Symmetry, integrability and geometry: methods and applications %D 2006 %V 2 %U http://geodesic.mathdoc.fr/item/SIGMA_2006_2_a40/ %G en %F SIGMA_2006_2_a40