@PhdThesis{Opportunistic_Bartering_of_Digital_Goods_and_Services_in_Pervasive_Environments,
	author = "Olga Vladi Ratsimor",
	title = "{Opportunistic Bartering of Digital Goods and Services in Pervasive Environments}",
	month = "August",
	year = "2007",
	organization = "Department of COmuter Science and Electrical Engineering",
	series = "Ph.D. Dissertation",
	school = "University of Maryland, Baltimore County",
}