What is integrability of discrete variational systems?

A master solution of the quantum Yang–Baxter equation and classical discrete integrable equations

(2013) Vladimir V. Bazhanov et al.   Advances in Theoretical and Mathematical Physics

Multi-time Lagrangian 1-forms for families of Bäcklund transformations: Toda-type systems

(2013) Raphael Boll et al.   Journal of Physics A-Mathematical and Theoretical

On the Lagrangian structure of 3D consistent systems of asymmetric quad-equations

(2012) Raphael Boll et al.   Journal of Physics A-Mathematical and Theoretical

Discrete-time Calogero–Moser system and Lagrangian 1-form structure

(2011) Sikarin Yoo-Kong et al.   Journal of Physics A-Mathematical and Theoretical

On the Lagrangian formulation of multidimensionally consistent systems

(2011) P. Xenitidis et al.   PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES

Non-symmetric discrete Toda systems from quad-graphs

(2010) Raphael Boll et al.   APPLICABLE ANALYSIS

Lagrangian multiform structure for the lattice Gel'fand–Dikii hierarchy

(2010) S B Lobb et al.   Journal of Physics A-Mathematical and Theoretical

On the Lagrangian Structure of Integrable Quad-Equations

(2010) Alexander I. Bobenko et al.   LETTERS IN MATHEMATICAL PHYSICS

Lagrangian multiforms and multidimensional consistency

(2009) Sarah Lobb et al.   Journal of Physics A-Mathematical and Theoretical

Lagrangian multiform structure for the lattice KP system

(2009) S B Lobb et al.   Journal of Physics A-Mathematical and Theoretical