Continuous and discrete (classical) Heisenberg spin chain revised. Ragnisco, Orlando; Zullo, Federico — 2007 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Bäcklund transformations for the trigonometric Gaudin magnet. Ragnisco, Orlando; Zullo, Federico — 2010 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
Bäcklund transformations for the Kirchhoff top. Ragnisco, Orlando; Zullo, Federico — 2011 SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]