An article, entitled ‘Foundations for Streaming Model Transformations by Complex Event Processing’, has been published in SoSym written by István Dávid, István Ráth and Dániel Varró. The paper shows the theory and practice of the complex event processing method. Since VIATRA open source project and our IoT-related developments such as Teqbox and MoDeS3 are based on this technology, these research results are applied in our R&D activity.