The link above does confirm that the OP should have access.

From
http://www.staralliance.com/en/benef...access-policy/

"International Business Class Customers: Customers have access to any Star Alliance member carriers' owned Business Class lounges.

* Customer must present a boarding card for the same day travel in international Business Class on a Star Alliance flight
* Customer must be departing from the local airport in International Business Class
* Customer is not entitled to any guests"