P.  Ruhnau and Schnörr, C., ?Optical Stokes Flow Estimation: An Imaging-Based Control Approach?, Exp. in Fluids, vol. 42, pp. 61?78, 2007.

P.  Ruhnau, Stahl, A., and Schnörr, C., ?On-Line Variational Estimation of Dynamical Fluid Flows with Physics-Based Spatio-Temporal Regularization?, in Proc. DAGM 2006, 2006, vol. 375-388, pp. 375-388.