@article{AZUMA97,
  author = {R. Azuma},
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@article{AZUMA01,
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@Book{KUEHNE07,
	author = {Bob Kuehne and Paul Martz},
	title = {OpenSceneGraph Reference Manual v1.2},
	year = {2007},
	publisher = {Blue Newt Software LLC and Skew Matrix Software LLC}
}

@inproceedings{LOOSER06,
 author = {J. Looser and M. Billinghurst and R. Grasset and A. Cockburn},
 title = {An evaluation of virtual lenses for object selection in augmented reality},
 booktitle = {GRAPHITE '07: Proceedings of the 5th international conference on Computer graphics and interactive techniques in Australia and Southeast Asia},
 year = {2007},
 isbn = {978-1-59593-912-8},
 pages = {203--210},
 location = {Perth, Australia},
 doi = {http://doi.acm.org/10.1145/1321261.1321297},
 publisher = {ACM},
 address = {New York, NY, USA}
 }
 
@Inproceedings{MACHADO04,
	author = {E. Machado Coelho and B. MacIntyre and S. Julier },
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	address = {Los Alamitos, CA, USA}
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@Book{MARTZ07,
	author = {Paul Martz},
	title = {OpenSceneGraph Quick Start Guide},
	year = {2007},
	publisher = {PMARTZ Computer Graphics Systems}
}

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