entries: Amft2017c: type: TechReport title: '{The Benefit of Stacking Multiple Peer-to-Peer Overlays}' institution: Technology of Social Networks Group, Heinrich Heine University, Düsseldorf, Germany year: '2017' pages: '' month: September address: '' number: TR-2017-002 author: - first: Tobias last: Amft - first: Kalman last: Graffi