@article{Ullrich_2012,
title={VARIANCE ANALYSIS AND COMPARISON IN COMPUTER-AIDED DESIGN},
volume={XXXVIII-5/W16},
ISSN={2194-9034},
url={http://dx.doi.org/10.5194/isprsarchives-xxxviii-5-w16-149-2011},
DOI={10.5194/isprsarchives-xxxviii-5-w16-149-2011},
journal={The International Archives of the Photogrammetry,
Remote Sensing and Spatial Information Sciences},
publisher={Copernicus GmbH},
author={Ullrich,
T. and Schiffer,
T. and Schinko,
C. and Fellner,
D. W.},
year={2012},
month=sep,
pages={149–153} }