@article{OSSJ09,
title = "Sketch-based modeling: A survey",
journal = "Computers & Graphics",
publisher = "Elsevier Ltd.",
volume = "33",
number = "1",
pages = "85-103",
month ="Feb",
year = "2009",
issn = "0097-8493",
doi = "http://dx.doi.org/10.1016/j.cag.2008.09.013",
url = "http://www.sciencedirect.com/science/article/pii/S0097849308001295",
author = "Luke Olsen and Faramarz F. Samavati and Mario Costa Sousa and Joaquim A. Jorge",
keywords = "Sketch-based modeling",
keywords = "Interface design",
keywords = "Perception"
}