Robuta

https://cris.tau.ac.il/en/publications/stability-of-systems-with-fast-varying-delay-using-improved-wirti/ Stability of systems with fast-varying delay using improved Wirtinger's inequality - Tel Aviv... stability of systems https://www.ideals.illinois.edu/items/100893 The Absolute Stability of Systems with Multiple Nonlinearities | IDEALS stability of systems absolute multiple ideals