4LEE B T. Semantic Web tutorial using N3[EB/OL]. (2003-05-21) [2012-10-18]. http://www, w3. org/ 2000/10/swap/doc/.
5TAN Ying,GODDARD S,PEREZ L C. A prototype architecture for cyber-physical system [ EB/OL ]. (2008-01-20) [2012-10-18]. http://www, cs. virginia. edu/sigbed/archives/2008-01/Tan, pdf.
6LEE E A, SESHIA S A. Introduction to embedded systems: a cyber-physical systems approach [EB/ OL]. (2011-03-12) [2012-10-18]. http://LeeSeshia. org.