Petroleum Economist, Dec 2009
The most interesting part of the story:
ExxonMobil has already drilled prospects in Germany, is planning more wells in Hungary and is in the "early phases of study" of shale-gas plays in Poland. (But despite television adverts in Europe saying the company is targeting shale gas to help salve European worries about energy security, the company is reluctant to give journalists any further details.)
http://www.petroleum-economist.com/default.asp?page=14&PubID=46&ISS=25529&SID=723555
You can sign up for a free 2 day trial subscription if you want to read the rest of the story, but it doesn't go into any further details in regards to the above statement.