I hope to be back to the topic with a more detailed exposition in a
paper in preparation.
Edward G. Belaga
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Institut de Recherche en Mathématique Avancée
Universite Louis Pasteur
7, rue René Descartes, 67084 Strasbourg Cedex, FRANCE
tel.: 333 90 24 02 35, FAX: 333 90 24 03 28
e-mail : edward.belaga AT math.u-strasbg.fr
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