CoHadoop: Flexible Data Placement and Its Exploitation in Hadoop. - Mohamed Y. Eltabakh; Yuanyuan Tian 001; Fatma Özcan; Rainer Gemulla; Aljoscha Krettek; John McPherson (Proc. VLDB Endow., 2011)

Opening the Black Boxes in Data Flow Optimization. - Fabian Hueske; Mathias Peters; Matthias Sax; Astrid Rheinländer; Rico Bergmann 001; Aljoscha Krettek; Kostas Tzoumas (Proc. VLDB Endow., 2012)

Peeking into the optimization of data flow programs with MapReduce-style UDFs. - Fabian Hueske; Mathias Peters; Aljoscha Krettek; Matthias Ringwald; Kostas Tzoumas; Volker Markl; Johann-Christoph Freytag (ICDE, 2013)

Enabling Operator Reordering in Data Flow Programs Through Static Code Analysis - Fabian Hueske; Aljoscha Krettek; Kostas Tzoumas (CoRR, 2013)