@book{70847,
	author = {Koni͡a︡gin, S. V. and Shparlinski, Igor E. and ebrary, Inc.},
	title = {Character sums with exponential functions and their applications},
	publisher = {Cambridge University Press,},
	year = {1999.},
	series = {Cambridge tracts in mathematics ;},
	address = {Cambridge ;},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10023558}
}