hal-00936148 title_s Positivity and lower bounds for the density of Wiener functionals auteur Vlad Bally, Lucia Caramellino journal Potential Analysis volume 39 numero 2 pages 141-168 doi 10.1007/s11118-012-9324-7 fichier_hal https://hal.archives-ouvertes.fr/hal-00936148/document annee 2013 Identifiant HAL 964381 719006