@Other{WeickertBruhnBroxPapenberg_2005,
title={A survey on variational optic flow methods for small displacements},
author={Weickert, Joachim and Bruhn, Andrés and Brox, Thomas and Papenberg, Nils},
doi={http://dx.doi.org/10.22028/D291-26315},
year={2005}
}