Birant Ramazan's papers

Quantification par déformation des variétés de Lie-Poisson,
    Thèse de doctorat , Université d'Orléans.
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Limite classique de C*-algebres de groupoides de Lie,
    Comptes Rendus Acad. Sci. Paris, t.329, Serie I, 603-606, 1999
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Available also as math.OA/9905177
 

Quantization of Poisson algebras associated to Lie algebroids, with N.P. Landsman
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Available also as math-ph/0001005
 

Une formule de type Baker-Campbell-Haussdorff pour les groupoides de Lie,
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