1. Phase and gain margins for multivariable control systems;Bar—on,1990
2. Phase margins for multivariable control systems;Bar—on;International Journal of Control,1990
3. Algebraictopology and robust control;Bar—on,1991
4. The geometry of the multivariable phase margin;Bar—on;IEEE Transactions on Automatic Control,1992
5. Global optimization of a quadratic functional with quadratic equality constraints;Bar—on;Journal of Optimization Theory and Applications,1994