- Hu, K., Peng, C. K., Huang, N. E., Wu, Z., Lipsitz, L. A., Cavallerano, J., & Novak, V. (2008). Altered phase interactions between spontaneous blood pressure and flow fluctuations in type 2 diabetes mellitus: nonlinear assessment of cerebral autoregulation. Physica A: Statistical Mechanics and its Applications, 387(10), 2279-2292.