1. System Dynamics: A Unified Approach;Karnopp,1975
2. Lagrange's equations for complex bond graph systems;Karnopp;Trans. ASME, J. Dyn. Sys., Meas. Control,1977
3. An introduction to observers;Luenberger;IEEE Trans. Automatic Control,1977
4. Applied Optimal Control;Bryson,1969
5. Designing low-order, near-optimum controllers with just a little algebra;Karnopp;ASME Paper 76-WA/Aut-5,1976