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Bibliographic reference
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  11. Piette Bernard, Zakrzewski Wojciech J., Properties of classical solutions of the U(N) chiral σ models in two dimensions, 10.1016/0550-3213(88)90595-0
  12. Sasaki R., Explicit forms of Bäcklund transformations for the Grassmannian and CP N−1 sigma models, 10.1063/1.526892
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  16. Lambert D, Piette B, Solutions of Minkowskian sigma models on hyperbolic complex Grassmann manifolds, 10.1088/0264-9381/5/2/010