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Integrable negative flows of the Heisenberg ferromagnet equation hierarchy. (arXiv:2201.02655v1 [nlin.SI]) http://arxiv.org/abs/2201.02655
Integrable negative flows of the Heisenberg ferromagnet equation hierarchy. (arXiv:2201.02655v1 [nlin.SI]) http://arxiv.org/abs/2201.02655