Erratum to: Multiple articles of Journal e&i elektrotechnik und informationstechnik
Due to a technical problem the copyright line in the HTML version of these articles was wrong. Correct is © The Author(s) 2018. The error occurred only in the HTML data of the articles; the PDF files were correct. The error has been rectified.
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Publisher URL: https://link.springer.com/article/10.1007/s00502-018-0640-5