@book{10196,
	author = {Fr�oman, Nanny. and Fr�oman, Per Olof. and ebrary, Inc.},
	title = {Physical problems solved by the phase-integral method},
	publisher = {Cambridge University Press,},
	year = {2002.},
	address = {Cambridge ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10021407}
}