Geodesic
On the solutions of the classical triangle equation related to the Landau–Lifschitz equation for non-homogeneous magnetics
Zapiski Nauchnykh Seminarov POMI, Differential geometry, Lie groups and mechanics. Part 10, Tome 172 (1989), pp. 130-136 
V. Yu. Popkov. On the solutions of the classical triangle equation related to the Landau–Lifschitz equation for non-homogeneous magnetics. Zapiski Nauchnykh Seminarov POMI, Differential geometry, Lie groups and mechanics. Part 10, Tome 172 (1989), pp. 130-136. http://geodesic.mathdoc.fr/item/ZNSL_1989_172_a11/
@article{ZNSL_1989_172_a11,
     author = {V. Yu. Popkov},
     title = {On the solutions of the classical triangle equation related to the {Landau{\textendash}Lifschitz} equation for non-homogeneous magnetics},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {130--136},
     year = {1989},
     volume = {172},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1989_172_a11/}
}
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Voir la notice du chapitre de livre provenant de la source Math-Net.Ru

A method due to Drinfeld and Belavin is used to construct deformations of classical $r$-matrices on semi-simple Lie algebras $\bigoplus\limits^N SU(2)$. These $r$-matrices are related to multi-component analogues of the Landau–Lifschitz equations which may be interpreted as models of one-dimensional magnets with several sublattices.