Alexander Medvedev, Deputy Chairman of OAO Gazprom, smiles next to Wolfgang Ruttenstorfer (R) CEO of OMV, during a news conference in Vienna January 25, 2008. Russia's Gazprom has agreed to take a 50 percent interest at Austrian group OMV's Baumgarten gas hub, OMV said on Friday. OMV and Gazprom would work together on joint storage projects with the aim of strengthening Europe's security of supply via higher trading volumes, the Austrian firm said.