Wingerath, Wolfram, Gessert, Felix, Friedrich, Steffen, Ritter, Norbert: Real-time stream processing for Big Data. In: it - Information Technology Nr.4, Jg.58 (2016), http://www.degruyter.com/view/j/itit.2016.58.issue-4/itit-2016-0002/itit-2016-0002.xml, S. 186-194