1Xiao jun Liu, Jie Liu, Johan Eker, Edward A Lee. Heterogeneous Modeling and Design of Control Systems[J]. IEEE Control Systems, 2001,35(5):532-533.
2Doboli, R.Vemuri. The definition of a VHDL-AMS subset for behavioral synthesis of analog systems[EB/OL]. http://citeseer.ist.Psu.edu/doboli98definition.html, 1998.