@book{KreissOliger:1973:TIMEDEPPROB,
	author		= "Kreiss , H. and Oliger , J.",
	year		= "1973",
	title		= "Methods for the approximate solution of time
                           dependent problems",
	publisher	= "WMO/ICSU Joint Organizing Committee",
	series		= "GARP Publications Series",
	volume		= "10"}
