1. Equivalent linearization, nonlinear circuit synthesis and the stabilization and optimization of control systems;Bass,1956
2. The A matrix, new network description;Bashkow;IRE Trans. CT-4,1957
3. On the bang bang control problem;Bellman;Quart. J. Appl. Math.,1956
4. Optimal discontinuous forcing terms;Bushaw,1958
5. On investigation of the switching criteria for higher order servomechanism;Bogner;Trans. Am. Inst. Elec. Engrs. Part II,1954