@inbook {ispoglou2015partial,
	title = {Partial Order Preserving Encryption Search Trees},
	booktitle = {Database and Expert Systems Applications},
	year = {2015},
	pages = {49{\textendash}56},
	publisher = {Springer International Publishing},
	organization = {Springer International Publishing},
	author = {Ispoglou, Kyriakos and Makris, Christos and Stamatiou, Yannis C and Elias C. Stavropoulos and Tsakalidis, Athanasios K and Iosifidis, Vasileios}
}
