%0 Journal Article %A Sarah B. Lobb %A Frank W. Nijhoff %T A Variational Principle for Discrete Integrable Systems %J Symmetry, integrability and geometry: methods and applications %D 2018 %V 14 %U http://geodesic.mathdoc.fr/item/SIGMA_2018_14_a40/ %G en %F SIGMA_2018_14_a40