Some articles on vatas:

Lars Windhorst - Business Career - Vatas Holding
... British fund Sapinda International and had become Managing Director of Vatas Holding GmbH (headquartered in Berlin, Germany and owned by Robert Hersov) ... At the time Vatas partly owned telco supplier Balda, a 22.1 percent stake of telecommunications provider Freenet AG and 15.4 percent share of Air Berlin ... At a later point, Vatas Holding purchased additional shares of Air Berlin, increasing their stake to 18.6% ...