Please help to contact with expertise STDs

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Three small figure with a certain confidence authorship F. Boucher.
However, expertise in Kiev (convinced me) can not pass, due to lack of graphics Bush in Ukraine. With expert commission Hermitage could not be reached. At the Hermitage site examinations of the phone not found. Sent a request to e-male, but the answer did not come.
Request to specialists: to share, if there is anyone the right contacts in the Hermitage on the examination of Western European art.
Beforehand thanks!