@incollection{barlow2001-pdi,
	author = {Gregory J. Barlow},
	title = {{CMOS} Active Pixel Sensor for a Polarization-difference Camera},
	pages = {127--145},
	institution = {University of Pennsylvania},
	booktitle = {NSF Technical Report TR-CST18SEPT01},
	year = {2001},
	url = {http://www.cs.cmu.edu/~gjb/includes/publications/other/barlow2001-pdi/barlow2001-pdi.pdf}
}