Please collect typical and untypical applications of two-terminal circuit theory for education and research:

(1) Will be used an energetic background independent from Norton or Thévenin Theorem?

(2) Can I use the two-terminal circuit theory in micro module of chaotic systems?

(3) What is the best description engineering language for two-terminal circuits (nonlinear electrical network; stat graphs; nonlinear equation; frequency response characteristic or other)?