@book{13647,
	author = {Richtmyer, Robert D. and Morton, K. W. and Morton, K. W. ; jt. auth.},
	title = {Difference methods for initial value problems},
	publisher = {Interscience Publication},
	year = {1967},
	series = {Interscience tracts in Pure and Applied Mathematics, no.4},
	address = {New York},
	edition = {2nd}
}