https://ieeexplore.ieee.org/document/5570915 (Publisher version)
Bokharaie, V., Mason, O., & Verwoerd, M. (2010). D-Stability and Delay-Independent Stability of Homogeneous Cooperative Systems. IEEE Transactions on Automatic Control, 55(12), 2882-2885. doi:10.1109/TAC.2010.2076334.