Sina Rafati Niya, Raphael Beckmann, Burkhard Stiller: BIoT: A Hybrid Blockchain for IoT Data; University of Zurich, IFI-TechReport No. 2020.2, Zürich, Switzerland, July 2020, URL: https://owncloud.csg.uzh.ch/index.php/s/TJHqxDgTtJNG66T.