@Other{BreußCristianiDurouFalconeVogel_2009,
title={Numerical algorithms for perspective shape from shading},
author={Breuß, Michael and Cristiani, Emiliano and Durou, Jean-Denis and Falcone, Maurizio and Vogel, Oliver},
doi={http://dx.doi.org/10.22028/D291-26514},
year={2009}
}