Balaji Veeramani, K. Narayanan, Awadhesh Prasad, Leonidas D. Iasemidis, Andreas S. Spanias, Kostas Tsakalis. Measuring the direction and the strength of coupling in nonlinear Systems-a modeling approach in the State space. IEEE Signal Process. Lett., 11(7):617-620, 2004. [doi]
Abstract is missing.