====== Cyber Physical system ======
  * https://scholar.google.com/citations?hl=en&user=blas90AAAAAJ&view_op=list_works&sortby=pubdate
  * https://www.google.de/search?q=Engineering+Cyber+Physical+Systems%3A+Applying+Theory+to+Practice+Preface&oq=Engineering+Cyber+Physical+Systems%3A+Applying+Theory+to+Practice+Preface&aqs=chrome..69i57j69i60l2.323j0j4&sourceid=chrome&ie=UTF-8
  * http://www.ieeecss.org/sites/ieeecss.org/files/documents/IoCT-Part3-02CyberphysicalSystems.pdf