Virtual Werder. - Christian Drücker; Sebastian Hübner; Esko Schmidt; Ubbo Visser; Hans-Georg Weland (RoboCup, 2000)

Recognizing Formations in Opponent Teams. - Ubbo Visser; Christian Drücker; Sebastian Hübner; Esko Schmidt; Hans-Georg Weland (RoboCup, 2000)

"As Time Goes By" - Using Time Series Based Decision Tree Induction to Analyze the Behaviour of Opponent Players. - Christian Drücker; Sebastian Hübner; Ubbo Visser; Hans-Georg Weland (RoboCup, 2001)

Using Online Learning to Analyze the Opponent's Behavior. - Ubbo Visser; Hans-Georg Weland (RoboCup, 2002)