Geodesic
Classification of almost toric singularities of Lagrangian foliations
Sbornik. Mathematics, Tome 202 (2011) no. 7, pp. 1021-1042 Cet article a éte moissonné depuis la source Math-Net.Ru

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The topological classification is given of almost toric singularities of integrable Hamiltonian systems with a large number of degrees of freedom, that is, of nondegenerate singularities without hyperbolic components. A descriptive geometric model is constructed, which makes it possible to perform effective calculations. Bibliography: 10 titles.
Keywords: Hamiltonian systems, singularities, integrability, topological invariants, Lagrangian foliations. 
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A. M. Izosimov. Classification of almost toric singularities of Lagrangian foliations. Sbornik. Mathematics, Tome 202 (2011) no. 7, pp. 1021-1042. http://geodesic.mathdoc.fr/item/SM_2011_202_7_a3/

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