@book{25037,
	author = {Rogers, C. and Schief, W. K. and ebrary, Inc.},
	title = {B�acklund and Darboux transformations},
	publisher = {Cambridge University Press,},
	year = {2002.},
	series = {Cambridge texts in applied mathematics},
	address = {Cambridge ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10021413}
}