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3. M. Kashiwara and M. Vergne, Inv. Math. 44, 1 (1978).
4. H. Rossi and M. Vergne, Acta Math. 136, 1 (1976).
5. J. Leray, “Analyse Lagrangienne et Mechanique Quantique,” R.C.P. 25, Series de Math. Pures et Appliqués, IRMA, Strasbourg 1978.